Projectile motion Definition and 1000 Threads

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Homework Statement Question says there is a car moving at 2 m/s and a projectile is launched from top of the car at a speed of 7 m/s relative to the car. They give the angle as 25 degrees above the horizontal but then ask what is the angle that it makes with ground when it finally lands? My...

So, I've already answered parts (b) and (c), but I'm struggling with (d). Thanks in advance for any help! 1. Homework Statement "A woman throws a ball at a vertical wall d = 6.0 m away. The ball is h = 3 m above ground when it leaves the woman's hand with an initial velocity of 16 m/s at 45°...

Homework Statement There was a plane with the height of 1 km above the ground. The plane is moving horizontally 200 m/s and can fire a bullet with the velocity of 400 m/s. At one time, the the gun form an angle of 37(degree) and fired the bullet. I was confused with the horizontal (x-axis)...

I've put the problem statement below and worked it out. I typically don't post questions like this as they're a lot to go through, but I am wondering if I have worked the problem correctly as my book does not have the solution and I feel like I am not understand the material correctly. 1...

Homework Statement I am trying to find the force needed from a spring to launch a mass of 800g to a length of 0.875m. This launch would be at the optimum angle of 45º. I am aware of all projectile motion equations but am having difficulty linking them to force and thus solving the problem...

Homework Statement Homework Equations kinematics. a=F/m The Attempt at a Solution 100cos(70)=342 100sin(70)=393.7 X=1/2(-9.8)t^2+100t; t=0. t=20.4

Homework Statement You are an invading army who wants to launch a rock over the enemy castle’s wall. The wall is 12 meters high and there is a moat surrounding the wall which forces you to launch from a distance of 17 meters away. What angle and velocity should you shoot at in order to just...

The initial position of the block is the origin; i.e., x = 0 at t = 0 . Consider down the track to be the positive x-direction. A block with an initial velocity v0 slides up and back down a frictionless incline. Which graph best represents a description the position of the block versus time...

Homework Statement The question states : Romeo tosses a pebble at Juliet's window to wake her. Unfortunately, he throws too large a pebble too fast. Just before crashing through the glass, the pebble is moving horizontally, having traveled a horizontal distance x and a vertical distance y as a...

Homework Statement A water hose is used to fill a large cylindrical storage tank of diameter D and height 2D . The hose shoots the water at 45 ∘ above the horizontal from the same level as the base of the tank and is a distance 6D awayHomework Equations Vx=Vt D=vit+1/2at^2 The Attempt at...

Homework Statement Check for first upload Homework Equations I wrote them down in my attempt at a solution The Attempt at a Solution Second upload, 81.48 meters high seems really wrong to me...

Homework Statement A tennis ball is struck such that it leaves the racket horizontally with a speed of 28.0 m/s. The ball hits the court at a horizontal distance of 19.6 m from the racket. What is the height of the tennis ball when it leaves the racket? Homework Equations v = vo + at x =...

Homework Statement An Arrow is shot from an initial velocity of 45 m/s 52 degrees above the horizontal. It lands on a 5 m high roof of a house. The arrow is shot from a height of 1.5 m. (v) Would it be able to pass over a 50 m high tree located 75 m away? (vi) What is its' total time of...

We are building an air cannon that shoots a wad of paper. I know the volume of the tank, the pressure of the tank, the size of the barrel, and the weight of the object. I need to know how to solve for initial velocity given this information. I will use the Vi to find the estimated distance...

Homework Statement Uploaded Homework Equations x(t)=xo+v0xT+1/2axt^2 The Attempt at a Solution (2Vo)costheta(t)=R, How would I get rid of T?

Q) two identical smooth balls are projected from points O and A on the horizontal ground with the same speed of projection the angle of projection in each case is 30 The distance between O and A is 100m . The balls collide in mid air And return to their respective points of projection if...

I've been trying to come up with the answer but it hasn't gotten me anywhere. I know that I need to find the angle to get the velocity. Q: A rock is projected from the edge of a 30.48 m tall building at some unknown angle above the horizontal. 5 seconds after, the rock strikes the ground at a...

Homework Statement You are the chief of the Angry Birds (Google it, if you don’t know the reference...it’s not important). You can shoot red birds from a catapult, and they will fly as projectiles under the effect of gravity. Gravity points downwards and has magnitude g = 9.80 m/s2 . Your goal...

One bullet was fired from Gun A and Gun B each at varying time interval. Both the guns are 10 meters above the ground. Calculate: a) Which gun was fired first. b) Displacement and time at which the two bullets will collide.

Consider the following diagram of a projectile motion (##\hat{\bf i}## and ##\hat{\bf j}## are the unit vectors of the ##x## and ##y##-axis respectively) We know that $$F=ma.\tag1$$ This can be rearranged to $$a=\frac Fm.\tag2$$ So there are actually two accelerations, one with magnitude...

1. Homework Statement The problem and all known information is attached. Homework Equations The kinematic equations are attached. The Attempt at a Solution My attempt is attached. I did part (a), (b), and (c), right. How do I do part (d)? I tried distance/ time .

Homework Statement You kick a ball with a speed of 2 m/s, at a 45 degree inclination to the horizontal. You measure h to be 4⁄15 m. What planet are you on? Homework EquationsThe Attempt at a Solution Upon first glance, I thought that this problem did not provide enough information...

Homework Statement The problem (5.9) and given data is attached. Homework Equations All relevant equations are given (5.9). On (5.9) What does the s subscript y represent? And why does gravity equal -32? The Attempt at a Solution The solution is given. This is a scan problem.

1. Homework Statement A jumper runs horizontally off a 910 meter mountain with speed 4.0 m/s and enjoys a free fall until she is 150 meters above the valley floor, at which time she opens her parachute. Ignore air resistance Homework Equations A) how long is the jumper in free fall. B) how...

<< Thread moved to the HH forums from the technical physics forums, so no HH Templatge is shown >>[/color] So I have this question that says, "Someone at a third floor window (12 m above ground) hurls a ball downward at 45 degrees at a speed of 25.0 m/s. How fast will it be traveling when it...

Homework Statement Jason is practicing his tennis stroke by hitting balls against a wall. The ball leaves his racquet at a height of 43 cm above the ground at an angle of 80° with respect to the vertical. The speed of the ball as it leaves the racquet is 25 m/s and it must travel a distance of...

Homework Statement Planning a new stunt where he will be shout out of a cannon into the back of a speeding utility vehicle the sit slopes downhill at 10 degrees and the cannon will launch him at 35Km/Hr at and angle of 30 degrees as shown in the attached picture Homework Equations I cannot...

Homework Statement Water is sprayed at an angle of 90° from the slope at 20m/s. Determine the range R. PLEASE SEE ATTACHMENTHomework Equations [/B] Kinematic Equations: acceleration: A = 0i +g(-j) + 0k; velocity: dV/dt = A; position: dR/dt = V; Origin set at the point spout...

Homework Statement a ball rolls off an incline on top of a 9.0m building at a velocity of 22m/s 32° below the horizontal how far from the base of the building will the ball hit the ground? [ANS = 11m) Homework Equations vf^2 = vi^2 + 2ad d = ((vf+vi)/2)t d = vt The Attempt at a Solution x...

Homework Statement Homework Equations - The Attempt at a Solution I know that the acceleration is downward always with value of 10m/s2 The answer is D? because j denote vertical axis and negative sign means downward? [/B]

Homework Statement In the figure, a baseball is hit at a height h = 1.30 m and then caught at the same height. It travels alongside a wall, moving up past the top of the wall 1.1 s after it is hit and then down past the top of the wall 3.9 s later, at distance D = 42 m farther along the wall...

Homework Statement Why the time of vertical motion and horizontal motion of the projectile are the same ? I couldn't understand it. Could someone explain it ? Homework EquationsThe Attempt at a Solution

Homework Statement In the figure, a baseball is hit at a height h = 1.30 m and then caught at the same height. It travels alongside a wall, moving up past the top of the wall 1.1 s after it is hit and then down past the top of the wall 3.9 s later, at distance D = 42 m farther along the wall...

Is the x component of the initial velocity equal to the velocity of the projectile at max height? v0cosθ0i = vmax heighti

Homework Statement A ski jumper acquires a speed of 119.0 km/hr by racing down a steep hill. He then lifts off into the air from a horizontal ramp. Beyond this ramp, the ground slopes downward at an angle of θ = 45 degrees. Homework Equations Assuming the skier is in free-fall motion after he...

1. A cannonball is fired toward a vertical building 400 m away with an initial velocity of at 36.9° above the horizontal. The ball will hit the building in A. 4.0 s. B. 5.0 s. C. less than 4.0 s. D. more than 5.0 s. 2. If the cannonball in the previous question is fired horizontally from a...

Homework Statement A cricketer fields the ball in the outfield, some 80 meters from the wicket keeper. The fielder needs to return the ball to the wicket keeper as quickly as possible. He can throw the ball with a speed of 140 km/hr. The cricket ball has a mass of 0.0168kg (e) The fielder...

Homework Statement This is a standard projectile motion problem, the mass is m, the drag is F_r = - alpha *v, where alpha is a positive retarding coefficient. The origin is the ground and at time t = 0 the horizontal and vertical velocities are positive a) Write down Newton's second law for...

I actually have 2 questions that I am getting stuck on around the same point.. Question 1) An arrow with a mass of 80g is fired at an angle of 30 degrees to the horizontal. It strikes a target located 5 m above the firing point and impacts the target traveling at a speed of 20 meters/sec. If...

Can i get a link or numerical problems on projectile motion Actually its so confusing

Homework Statement Two identical metal blocks, H and A, are placed at equal heights on frictionless ramps as shown above. The blocks are released at the same time, travel down the ramp, and then slide off their respective ends of the table. Block H leaves the table from a horizontal surface...

Homework Statement A cannonball is fired with a velocity of 125 m/s at 25.0° above the horizontal a) Determine the horizontal and vertical components of the initial velocity. b) Determine the maximum height the cannonball reaches in its path c) Determine the time it takes to reach maximum...

Attempting a projectile motion question where initial and final speed is given but angle of elevation isn't. Need to find an equation for the vertical distance H travelled. I got the right answer using v^2 = u^2 + 2as substituting s=H and a=-9.8. However the mark scheme states that this...

I'm working on a project to make a SmartBall that can detect the velocity(km/h) , spin(degrees per second) and flightpath(trajectory) of the ball using Intel Edison with the 9DOF block (LSM9DS0 : 3-axis accelerometer, 3-axis gyroscope, and 3-axis magnetometer) & the battery block, I'm reading...

sand bag is dropped...i can understand that vertical acceleration is 9.8m/s^2...so vertical velocity increases in a.p (9.8, 19.6... m/s)...but this book says horizontal velocity of sandbag is constant and same as that of hot-air balloon (i.e., 12m/s)...I think the horizontal velocity should...

Homework Statement A projectile needs to be launched over a fence of width d, and height y. Find the minimum velocity needed. Homework Equations Projectile Motion etc.. The Attempt at a Solution [/B] x(t) = v0xt y(t) = -½gt2+voyt Setting: x(T) = L y(T) = h

Hi guys, I am stuck with a problem here. First, It is given that for 2-dimensional projectile motion, a trajectory of 45 degrees will yield the greatest range. However, how do I show that angles that differ from 45 degrees by the same amount will yield the same range? For example, the range of...

Homework Statement The following series of differential equations represents a projectile's path when solved (g=9.81): Modify this series of differential equations to account for an additional force F with vector components a and b acting on the projectile. Here is a sample plot of this...

So I'm working on an experiment where I do a projectile motion simulation here on Earth and want to know how it will fair in a low gravity environment such as in the moon with one common parameter in between, Force. Imagine, here on earth, I have a mass that I push up with a force(F) for it to...