What is Baseball: Definition and 264 Discussions

Baseball is a bat-and-ball game played between two opposing teams who take turns batting and fielding. The game proceeds when a player on the fielding team, called the pitcher, throws a ball which a player on the batting team tries to hit with a bat. The objective of the offensive team (batting team) is to hit the ball into the field of play, allowing its players to run the bases, having them advance counter-clockwise around four bases to score what are called "runs". The objective of the defensive team (fielding team) is to prevent batters from becoming runners, and to prevent runners' advance around the bases. A run is scored when a runner legally advances around the bases in order and touches home plate (the place where the player started as a batter). The team that scores the most runs by the end of the game is the winner.
The first objective of the batting team is to have a player reach first base safely. A player on the batting team who reaches first base without being called "out" can attempt to advance to subsequent bases as a runner, either immediately or during teammates' turns batting. The fielding team tries to prevent runs by getting batters or runners "out", which forces them out of the field of play. Both the pitcher and fielders have methods of getting the batting team's players out. The opposing teams switch back and forth between batting and fielding; the batting team's turn to bat is over once the fielding team records three outs. One turn batting for each team constitutes an inning. A game is usually composed of nine innings, and the team with the greater number of runs at the end of the game wins. If scores are tied at the end of nine innings, extra innings are usually played. Baseball has no game clock, although most games end in the ninth inning.
Baseball evolved from older bat-and-ball games already being played in England by the mid-18th century. This game was brought by immigrants to North America, where the modern version developed. By the late 19th century, baseball was widely recognized as the national sport of the United States. Baseball is popular in North America and parts of Central and South America, the Caribbean, and East Asia, particularly in Japan, South Korea and Taiwan.
In the United States and Canada, professional Major League Baseball (MLB) teams are divided into the National League (NL) and American League (AL), each with three divisions: East, West, and Central. The MLB champion is determined by playoffs that culminate in the World Series. The top level of play is similarly split in Japan between the Central and Pacific Leagues and in Cuba between the West League and East League. The World Baseball Classic, organized by the World Baseball Softball Confederation, is the major international competition of the sport and attracts the top national teams from around the world.

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  1. R

    Acceleration question -- Deceleration of a baseball being caught by a player

    1. A baseball is traveling at +18 m/s and is caught by a player. The ball is brought to rest in 0.5 s. What is the acceleration of the ball?Homework Equations Maybe vf=vi+ at ?The Attempt at a Solution This is under a Horizontal Projectiles worksheet by the way...I'm not sure what to do on this...
  2. M

    Physics in vertical jump and basball hit

    Homework Statement Okay so these are from movies. I am trying to prove them right or wrong using physics. how can I figure out the pounds of force of a vertical jump when I have the: height of the jump = 6 feet Time to reach top = .797 sec Mass of person = 100lbs 2. How can I figure out this...
  3. C

    Does Bat Weight or Swing Speed More Significantly Affect Ball Exit Speed?

    Okay so I'm not sure if this post should go here but I would like some help figuring out a baseball related question. I have a 33" bat that is 30oz that I average 84mph swing speed at contact with the baseball. I tried swinging a 34" bat that is 31oz that I average 81mph swing speed at contact...
  4. GiantSheeps

    How Is Impulse Calculated in Baseball Physics?

    Homework Statement A(n) 0.142 kg baseball is thrown with a speed of 19.5 m/s. It is hit straight back at the pitcher with a final speed of 26.6 m/s. What is the magnitude of the impulse delivered to the ball? Answer in units of kg · m/s (part 2) Find the average force exerted by the bat...
  5. R

    Average force between baseball and bat

    Homework Statement [/B] A 0.145- kg baseball with an initial speed of 20 m/s rebounds with a speed of 36 m/s after being struck with a bat. If the duration of contact between ball and bat was 2.4 ms, what was the magnitude of the average force between ball and bat? Homework Equations Δ...
  6. W

    How Can You Throw a Baseball into Orbit from the Top of Mt. Chimborazo?

    Homework Statement If you were on the top of Mt. Chimborazo in Ecuador (0°S, 80°W, elevation 20,564 ft), with what minimum speed (and in what direction) would you have to throw a baseball horizontally so that it would go into a circular orbit about the earth? (Neglect air friction. Assume a...
  7. B

    Average force on a baseball when struck by a bat

    Homework Statement Baseball(0.145kg) pitch is pitched horizontally at 32m/s, ball pops straight up to a height of 36.5m. If the contact time between bat and ball is 2.5ms, calculate the average force between the ball and the batt during contact. Homework Equations Favg = Δp/t KE=KE The...
  8. G

    Bat Hits Baseball - Force & Time Calculation

    << Moderator Note -- thread moved to the HH forums >> a pitcher throws a 1.5kg baseball with speed 25m/s. it hits the bat and return in opposite direction with same speed. the force that bat exerted on ball is 50N. For how long was the bat touching(in contact) the ball? I used: delat t * F =...
  9. B

    Velocity of Baseball at 47 m Height

    Homework Statement A baseball is hit directly upward with an initial speed of 37 m/s. Find the velocity of the ball when it is at a height of 47 m. Homework Equations F=ma F=ag The Attempt at a Solution F=(37)(-9.8)=-362.6/47=7.7[/B]
  10. M

    Probability Questions: Sheldon Ross 7th ed. Baseball probability

    Baseball probability question On the morning of September 30, 1982 the won lost records of the three leading baseball teams were as follows W L braves 87 72 giants 86 73 dodgers 86 73 Each team had 3 remaining games to be played. 3...
  11. Tranceform

    Does Time Dilation Affect Observations in Baseball?

    Homework Statement A baseball player at home plate hits a pop fly straight up (the beginning event) that is caught by the catcher at home plate (the ending event). Which one or more of the following obeservers record(s) the proper time interval between the two events? (a) A spectator sitting...
  12. K

    Calculating the Velocity of a Baseball Hit at 300° Angle

    Homework Statement First i apologize for my english, i don't know the customary names. A baseball player hits the ball at an angle of 300 above the horizon. it lands 100 meters away at the same height (another player catches it). What is the velocity at the beginning? Homework Equations...
  13. L

    Baseball thrown against a wall

    How do I determine the force per square inch that a baseball would hit a wall? Assume the baseball was thrown at 50 mph? What would be the force? and does that translate into a weight or pressure? Obviously the ball would stop immediately. If we assumed it stopped like a baseball bat of...
  14. C

    Trouble with question - Catching a baseball & momentum

    Trouble with question -- Catching a baseball & momentum There are three parts to this question, and I am stuck on the last part. The question reads as follows: a) A pitched ball with a mass of 0.5kg reaches a catchers glove traveling at 35m/s. How much momentum does the ball have...
  15. N

    Collision of baseball with falling person

    Homework Statement You throw a baseball at a 45 degrees angle to the horizontal, aiming at a friend who's sitting in a tree a distance, h, above ground. At the instant you throw your ball, your friend drops another ball. a) Show that the two balls will collide, no matter what your ball's...
  16. H

    Debate Which will fly further: Golfball, Baseball, Mouseball

    Hello All, I have a small Office Debate on which object would fly further when struck with a baseball bat. The three objects that are being compared are: Baseball Golf Ball Mouse-ball (The old computer mice had a rubber ball inside, but if you remove the rubber you get the solid...
  17. F

    Calculating Impulse from a Bat to a Baseball: Finding Direction and Magnitude

    A 0.14 kg baseball moves horizontally with a speed of 29 m/s toward a bat. After striking the bat the ball moves vertically upward with 46% of its initial speed. Find the direction and magnitude of the impulse delivered to the ball by the bat. Find the ° (measured from the initial direction...
  18. D

    Baseball dropped from building with air resistance

    Homework Statement A baseball (radius = 0.0366m, mass = 0.145kg) is dropped from rest at the top of the Empire State Building (height = 1250ft = 381m). Calculate (a) the initial potential energy of the baseball, (b) its final kinetic energy, and (c) the total energy dissipated by the falling...
  19. J

    Kinematics of a Home Run: What is the Initial Speed and Components at the Fence?

    Homework Statement a baseball player hits a home run that just clears a fence that is 19.0 meters high.The fence is located 128 meters from the home player(where the ball is hit). The ball was hit at an angle of 37.0 degrees above the horizontal from a height of 0.900 meters above the ground...
  20. S

    How to Calculate Impulse and Average Net Force in a Baseball Collision

    Hello, I am taking physics 12U through correspondence. I am having issues with this problem. I don't know why but I feel like I made a mistake in this. Can you guys check this question and verify my results. Thanks, very much. :smile: Homework Statement A baseball with a mass of 0.152...
  21. P

    Baseball change of direction Force and Impulse

    A softball of mass .4kg is pitched at a speed of 24 m/sec, the batter hits it back directly at the pitcher at a speed of 20 m/s. The bat acts on the ball for .015 secs. A: What is the impulse imparted on the ball? B: What is the average force exerted by the bat on the ball? pi= mv pi=...
  22. N

    Physics of Baseball: Understanding Angular Velocity

    Hey, do you ever play baseball? :-) Me yes and I really like it. However, I don´t understand physics of basseball. Today, I found one interesting about it. Let us consider the following model of a baseball player hitting a ball. Baseball bat is a thin homogeneous rod of length L and mass m...
  23. R

    Baseball runner asking for velocity to an out

    Homework Statement A fast base-runner can get from first to second base in 3.45 s. If he leaves first base as the pitcher throws a 90 mi/h fastball the 69-ft distance to the catcher, and if the catcher takes 0.45 s to catch and rethrow the ball, how fast does the catcher have to throw the ball...
  24. C

    MHB Arc length of baseball motion

    The centerfield fence at a ballpark is 10 ft high and 400 ft from home plate. The ball is 3 ft above the ground when hit, and leaves with an angle theta degrees with the horizontal. The bat speed is 100 mph. Use the parametric equations x = (v0cos(theta))t y = h + (v0sin(theta))t - 16t^2 a...
  25. C

    Physics and Baseball, relating the two

    Hey everyone. I've asked a few questions before here, but now I have one not related to my homework or career possibilities. It may be a little difficult. I am a baseball player and I know classical mechanics and kinematics. However, this question is beyond that. I am trying to find a way to...
  26. K

    What is the mass of the baseball bat?

    A baseball bat balances 69.4 cm from one end. If an 0.544 kg glove is attached to that end, the balance point moves 23.1 cm toward the glove. Calculate the mass of the bat. sum of all touques=0 sum of all forces=0 T(torque)=r x F where r and F are vectors T= Iα The only thing I know...
  27. R

    Calculating Kinetic Energy of an Exploding Baseball

    exploding baseball 1. A 150 g trick baseball is thrown at 59 km/h. It explodes in flight into two pieces, with a 41 g piece continuing straight ahead at 85 km/h. How much energy do the pieces gain in the explosion? Homework Equations The Attempt at a Solution is it asking for...
  28. B

    Baseball and medicine ball thrown with different KE/P/V

    Homework Statement Your physical education teacher throws a baseball to you at a certain speed and you catch it. The teacher is next going to throw you a medicine ball whose mass is ten times the mass of the baseball. You are given the following choices: You can have the medicine ball...
  29. J

    What is the reaction time for a batter facing a 45.0 m/s fastball?

    Homework Statement A baseball pitcher throws a fastball horizontally at a speed of 45.0 m/s toward home plate, 17.1 m away. Ignore air resistance. (a) If the batter’s combined reaction and swing times total 0.340 s, how long can the batter watch the ball after it has left the pitcher’s...
  30. B

    The baseball pitcher on an asteroid

    Homework Statement A baseball pitcher can throw a fastball at a speed of 150 km/hr. What is the largest size spherical asteroid of density rho=3 g/cm^3 from which he can throw the ball fast enough that it: (a) escapes from the asteroid into heliocentric orbit? (b) rises to a height of 50...
  31. J

    Velocity & Acceleration of Ball Thrown Upward: Perpendicular? Parallel?

    Are there any points along its path at which the velocity and acceleration vectors are perpendicular? Parallel? Also, if a ball is thrown directly upward, wouldn't it fall directly back down? Homework Equations The Attempt at a Solution
  32. C

    How Much Does Gravity Affect a Baseball's Trajectory Over 18.4 Meters?

    1. While trying out for the position of pitcher on your high school baseball team, you throw a fastball at 76.4 mi/h toward home plate, which is 18.4 m away. How far does the ball drop due to effects of gravity by the time it reaches home plate? (Ignore any effects due to air resistance and...
  33. P

    How much force would it require to obliterate a baseball bat?

    Just a simple question,I would like to know how much force or energy it would take to break or obliterate a standard sized baseball bat made of maple. A hammer would be the tool for this. If possible could you explain the process used to calculate this and post the energy in joules?
  34. T

    Why does the Split-finger baseball pitch break?

    Supposedly the Split-finger is suppose to 'tumble' or drop as you can find in most references to the pitch. But it's almost impossible to find the answer to "why?" (perhaps because baseball pitchers aren't physicists?) But I have a theory. It involves knowledge on the way the curveball (12-6...
  35. vhbelvadi

    What Happens When You Pitch a Baseball at 90% the Speed of Light?

    I came across this from xkcd today. The question seems interesting, but I was wondering if this expplanation quite covers this or are there other possibilities? (Also, is something wrong with this explanation?) Basically they're dealing with a baseball pitched at relativistic speeds...
  36. Simon Bridge

    Fastball Physics: Relativistic Baseball

    Relativistic Baseball When it reaches the batter, the center of the cloud is still moving at an appreciable fraction of the speed of light. It hits the bat first, but then the batter, plate, and catcher are all scooped up and carried backward through the backstop as they disintegrate. That's...
  37. B

    Projectile Motion - baseball popup

    Projectile Motion -- baseball popup Homework Statement A baseball is popped up, remaining aloft for 6.3 s before being caught at a horizontal distance of 83 m from the starting point. What was the launch angle? Homework Equations vx = vcostheta vy = vcostheta The Attempt at a...
  38. Z

    Change in momentum of baseball being struck

    Homework Statement A 0.33 kg softball has a velocity of 14 m/s at an angle of 50° below the horizontal just before making contact with the bat. What is the magnitude of the change in momentum of the ball while it is in contact with the bat if the ball leaves the bat with a velocity of (a) 15...
  39. D

    Projectile motion hit baseball

    1. Homework Statement A baseball is hit at a point 1.00m above homeplate. The baseball is given an initial velocity of 35.0m/s at an angle of 45.0° with respect to the horizontal. If the baseball is traveling towards the outfield fence which is 4.0m high and 120m away, will the baseball clear...
  40. D

    Would the baseball clear the fence- projectile motion

    Homework Statement A baseball is hit at a point 1.00m above homeplate. The baseball is given an initial velocity of 35.0m/s at an angle of 45.0° with respect to the horizontal. If the baseball is traveling towards the outfield fence which is 4.0m high and 120m away, will the baseball clear...
  41. P

    Baseball Acceleration Question

    Homework Statement Need assistance with this problem. Homer Agin leads the Varsity team in home runs. In a recent game, Homer hit a 96 mi/hr sinking curve ball head on, sending it off his bat in the exact opposite direction at 56 mi/hr. The actually contact between ball and bat lasted for...
  42. J

    Calculating Projectile Motion in a Baseball Home Run

    Homework Statement A ball player hits a home run, and the baseball just clears a wall 21.0 m high located 130.0 m from home plate. The ball is hit at an angle of 35 degrees to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1.0 m above the ground. a...
  43. P

    Power method to rank baseball teams

    Use the power method to rank the baseball league with the matrix { 1, .5, .5} {.5, 1, 1/3} {.5, 2/3, 1} So I choose some random matrix which sum to one so let x={.5,.3,.2}^T So { 1, .5, .5} {.5, 1, 1/3} {.5,.3,.2}^T= X_{1} {.5, 2/3, 1} And I keep repeating this...
  44. M

    Work Energy Theorem A Baseball thrown from a roof

    Homework Statement A baseball is thrown from the roof of 21.7 -tall building with an initial velocity of magnitude 13.2 and directed at an angle of 55.0 above the horizontal. What is the speed of the ball just before it strikes the ground? Use energy methods and ignore air resistance...
  45. M

    Speed of EM waves in a baseball park setting

    Homework Statement You and a friend are sitting in the outfield bleachers of a baseball park 140m from homeplate. The temperature is 20*C. YOur friend is listening to radio comentary with headphones while watching. There is a microphone located 17m from home plate to pick up the sound as the...
  46. J

    Calculating Impulsive Force on Baseball Player's Hand

    Homework Statement A baseball player catching a ball can soften the impact by pulling his hand back. Assuming that a 5-oz ball reaches his glove at 90 mi/h and that the player pulls his hand back during the impact at an average speed of 30 ft/s over a distance of 6 in., bringing the ball...
  47. S

    Probability of Baseball Division Title

    Homework Statement On the morning of September 30, 1982 the won lost records of the three leading baseball teams in the Western Division of the National league were: Braves Won: 87 Lost:72 Giants Won: 86 Lost: 73 Dodgers Won: 86 Lost: 73 Each team had 3 games...
  48. X

    Baseball Slugger's Pitch: Will it be a Home Run?

    Homework Statement A baseball slugger connects with a pitch 4 ft above the ground. The ball heads toward the 10-ft-high center-field fence, 455 ft away. The ball leaves the bat with a velocity of 125 ft/s and a slope of 3 vertical to 4 horizontal. Neglecting air resistance, determine whether...
  49. H

    BaseBall Question (Momentum & Impulse in 2 dimensions)

    Homework Statement a baseball with a mass of 0.152 kg is moving horizontally at 32.0 m/s [E] when it is struck by a bat for 0.00200 seconds. The velocity of the ball just after the collision is 52.0 m/s [W 20 N] a) Find the impulse experienced by the ball b) find the average net force of...
  50. M

    How Fast Must a Baseball Travel to Clear a 29m Obstacle?

    Homework Statement A baseball is hit at a height of 1m with an initial speed of vo module at an angle of projection of 35o from the horizontal. She spent just over an obstacle of 29m high at a horizontal distance of 64m. Find a) vo b) the time it takes to reach the OBSTACLES c) its speed...
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