Impulse Definition and 905 Threads

Homework Statement plot using matlab: g = 3 cos (10pi t) convolved with 4 impulse (t +0.1) Homework Equations The Attempt at a Solution x = -10:0.1:10; u = 3*cos (10*pi*x); v = 4*dirac(x + 1./10); y = conv (u,v); plot (x,y); but i keep getting this error: Error using ==>...

Homework Statement A 7.0 kg toy car can move along an x axis; Figure gives Fx of the force acting on the car, which begins at rest at time t=0. The scale on the Fx axis is set by Fxs = 6.0 N. In unit-vector notation, what is p at (a)t = 1.0 s and (b)t = 6.0 s,(c) what is v at t = 9.0 s...

If my rocket has two rocket engines going off each at an impulse at 20.00 N/S... If my rocket has two rocket engines going off each at an impulse at 20.00 N/S, then would the total amount of impulse my rocket has be 40.00 N/S? Please answer seriosuly only this is extremely important and...

Homework Statement A 41 rubber ball is dropped from a height of 1.8 and rebounds to two-thirds of its initial height. http://session.masteringphysics.com/problemAsset/1070447/4/09.P29.jpg The figure (Part C figure) shows the impulse received from the floor. What maximum force does the...

Homework Statement A 0.40 kg soccer ball approaches a player horizontally with a velocity of 18 m/s to the north. The player strikes the ball and causes it to move in the opposite direction with a velocity of 24 m/s. What impulse was delivered to the ball by the player? Answer in units of kg ·...

Homework Statement A 68.0 kg bungee jumper, tied to a 31.0 m long cord, leaps off a bridge whose deck is 61.0 m above the water. He falls to 7.0 m above the water before the bungee cord pulls him back up. What is the magnitude of the impulse exerted on the bungee jumper while the cord...

Homework Statement 1. The force shown in the figure below is the net eastward force acting on a ball. The force starts rising at t=0.012 s, falls back to zero at t=0.062 s, and reaches a maximum force of 35 N at the peak. Determine with an error no bigger than 25% (high or low) the magnitude...

I'd be grateful if someone could help me with the problem below: A free-floating uniform cube with sides of length 2 is at rest, aligned with the coordinate axes, when it is subjected to an impulse along one edge of 3m, where m is its mass. What is the effect on its motion? (Its inertia...

I would like an explanation with this formulas for a rocket engine and any other engine to calculate its exhaust velocity and its specific impulse. I realized that this formulas neglect combustion temperature, engine pressure, speed of the fuel is injected, etc. -----------------------------...

A 4kg wooden block resting on an icy surface (so friction can be ignored) is attached to a horizontal spring (L=1m, k=100N/kg), which is attached on the other end to a vertical wall. A 2g bullet is fired at a speed of 100m/s into the wooden block, pushing it directly toward the wall. What is...

Homework Statement A one-dimensional impulse force acts on a 3.0-kg object, as described in the graph below. http://qaboard.cramster.com/Answer-Board/Image/2006714849276328846376778312506582.jpg Find: (a) The magnitude of the impulse given to the object. (b) The magnitude of the...

Homework Statement A bullet with a mass of 0.005 kg and moving with a speed of 400 m/s penetrates a distance of 0.08m into a wooden block firmly attached to the Earth. Assume that the force stops it is constant. Compute for: a.) acceleration of the bullet b.) accelerating force c.) time...

Homework Statement A proton has mass 1.7 x 10-27 kg. What is the magnitude of the impulse required in the direction of motion to increase its speed from 0.995c to 0.998c? Homework Equations gamma=1/sqrt(1-(v/c)2) p=gamma*mass*velocity The Attempt at a Solution (1.7 x 10-27 * 15.82...

Homework Statement Two small steel balls A and B have mass 0.6 kg and 0.2 kg respectively. They are moving towards each other in opposite directions on a smooth horizontal table when they collide directly. Immediately before the collision, the speed of A is 8 m s–1 and the speed of B is 2 m...

Hey, I registered on here just for this question. I will be posting here regularly though. I want to know who discovered the formulas for momentum and impulse. That's all I really want to know. It would be nice if someone would reply to this, thanks.

Hello... new to the forum and not sure where to post, I see a warning everywhere lol Hope I'm not in the wrong spot. I haven't been in school in well over a decade, but I'm the kind of guy that went out and got math books on my own because I was jonsing to do some math... it's fun for me...

Homework Statement [SIZE="4"] a tinnes ball of mass 150 gm moves with velocity 11.2 m/s to collide with a racket , after collision it is rebounded with vilocity 7 m/s ...find :-the impulse of the racket on the ball. Homework Equations [SIZE="4"]I = m (delta) v...

[b]1. The one sled has a mass of 2m and the other sled has a mass of m show that sled one with mass 2m has a momentum of root2 compared to the sled with mass m. The only formulas that i could think to use were p=mv and sigmaF=dp/dt and i can't seem to find a way to relate them to get an...

[SOLVED] Impulse and Momentum problem on skaters Homework Statement A 50.0-kg skater is traveling due east at a speed of 3.00 m/s. A 70.0-kg skater is moving due south at a speed of 7.00 m/s. They collide and hold on to each other after the collision, managing to move off at an angle theta...

Can anyone show me how to use impulse to solve any problem?

Homework Statement A ball is moving toward a batter at 32m/s and weighs 0.15kg. After the batter hits it goes 105.0m at an initial angle of 52 degrees. What is the magnitude of the impulse the ball receives in the collision with the bat, and what is the direction of the impulse? [b2...

[b]1. A super ball, made of rubblerlike plastic, is thrown against a hard smooth wall. The ball has a mass of 4.0g and strikes the wall from a perpendicular direction with a speed of 15.0 m/s. For simplicity, assume that the acceleration is constant while the ball is in contact with the wall...

1. A ball of mass 0.40kg is moving to the left at a velocity v0=-20 m/s. It is kicked and given a velocity, at 45 degrees upwards to the right, of vf30[/sub] m/s. 1) Find the impulse of the force 2) Find the average force The collision time is 0.010s 2. I = (delta) P I = F...

Homework Statement A 0.5kg softball is pitched at a speed of 13m/s. The batter hits it back directly at the pitcher at a speed of 29m/s. The bat acts on the ball for 0.018 s. a)What is the magnitude of the impulse imparted by the bat to the ball? Answer in units of N *s. b) What is the...

Homework Statement A ball of mass 0.150 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.960 m.* What impulse was given to the ball by the floor? Homework Equationsimpact speed is given by (1/2)mv^2 = mgh1. rebound speed is given by (1/2)mv^2...

Nvm, solved!

sorry but i have one last question momentum and impulse... A boy with mass of 60 kg standing on a frozen lake throws a ball with mass of 10 kg at 10 m/s towards his worst enemy. His enemy with a mass of 50 kg catches the ball. What velocity does the ball have after being caught...

I still need someone smart to explain 2 me momentum and Impulse throughly... 1. A hunter has rifle that can fire a.05 kg bullets with a speed of 900 m/s. A 40 kg leapord springs at him at 10 mm/s. How many bullets would the hunter need to stop the tiger dead in its tracks...

Need Help with Momentum and Impulse?? Need some one smart... The only formulas that were provided were 1. I =Δp 2. mΔv 3. I=FΔt 4. KE= 1/2 mv^2 5. PE= mgΔh 6. ΔPE= ΔKE 7. W= F*D 8. W= ΔKE Momentum Before Collision = Momentum After Collision 9. m`av`a + m`bv`b = m`av`a + m`bv`b...

Need Help with Momentum and Impulse?? Need some one smart... The only formulas that were provided were 1. I =Δp 2. mΔv 3. I=FΔt 4. KE= 1/2 mv^2 5. PE= mgΔh 6. ΔPE= ΔKE 7. W= F*D 8. W= ΔKE Momentum Before Collision = Momentum After Collision 9. m`av`a + m`bv`b = m`av`a + m`bv`b...

Homework Statement Before a collision, a 26 kg object is moving at +10 m/s. Find the impulse that acted on the object if, after the collision, it moved at the following velocities. a) +8.0 m/s b) -8.0 m/s Homework Equations Impulse = change in momentum = mass * change in...

hello all i just want to know why we use the inverse impulse response ? and i need a practical example on it ?/ and how?/? i need Quiqly answer as soon as u can please...:smile:

Hey everyone, Homework Statement A spacecraft is separated into two parts by detonating the explosive bolts that hold them together. The masses of the parts are 1200 kg and 1900 kg. The magnitude of the impulse on each part from the bolts is 400 N·s. With what relative speed do the two...

Homework Statement A 110 kg fullback is running at 4.4 m/s to the east and is stopped in 0.75 s by a head-on tackle by a tackler running due west. A. Calculate the impulse exerted on the fullback. B. Calculate the impulse exerted on the tackler. C. Calculate the average force exerted on...

Homework Statement My question is: Now assume that the pitcher in Part D throws a 0.145 kg baseball parallel to the ground with a speed of 32 m/s in the +x direction. The batter then hits the ball so it goes directly back to the pitcher along the same straight line. What is the ball's...

Homework Statement A ball of mass 0.4 kg is initially at rest on the ground. It is kicked and leaves the kicker’s foot with a speed of 5.0 m/s in a direction 60◦ above the horizontal. The magnitude of the impulse k~Ik imparted by the ball to the foot is most nearly The Attempt at a...

Homework Statement A ball of mass 0.4 kg is initially at rest on the ground. It is kicked and leaves the kicker’s foot with a speed of 5.0 m/s in a direction 60◦ above the horizontal. The magnitude of the impulse k~Ik imparted by the ball to the foot is most nearly: 1. ||J|| = 1Ns. 2...

A 5 kilogram ball initally rests at the edge of a 2 meter long, 1.2 meter high frictionless table. A hard plastic cube of mass .5 slides across the table at a speed of 26 meters per second and strikes the ball, causing the ball to leave the table in the direction in which the cube was moving...

HELP!Impulse problem Homework Statement A bullet of mass m and speed v passes through a pendulum bob of large mass M and emerges with speed v/2. the bob is at the end of a sting of length l.What impulse is delivered to the bob by the bullet in this case.The Attempt at a Solution...

OK I have 1 more question for today... Homework Statement A 0.45kg volleyball travels witha horizontal velocity of 3.2m/s over the net. You jump up an hit the ball back witha horizontal velocity 7 m/s. If the contact time is 0.047s, what is the average force on the ball? Homework...

Homework Statement A small 120kg rocket is fired vertically, propelled by an engine with a thrust of 6500N. The engine ejects gas at a rate of 4.5kg/s. a) Calculate the change in velocity of the gases relative to the engine b) after 20 s what will be the rockets accleration. Homework...

Homework Statement a sled slides along a horizontal surface on which the coeffient of kinetic friction 0.25. its veocity at pt A is 8m/s at pt B its 5m/s. use impulse-momentum theorem to find how long the sled takes to travel from A to B Homework Equations P=J The Attempt at a...

Homework Statement There are two balls traveling and they collide. How do there momentum change. What is the impulse done to ball B by ball A. Homework Equations delta momentum = 0 impulse = ? The Attempt at a Solution the first part i think its C becuz A is moving up and...

Homework Statement When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 75 kg man just before contact with the ground has a speed of 6.0 m/s. (a) In a...

Homework Statement A tennis ball of with a mass of .045 kg and speed of 25 m/sec strikes a wall at an angle of 45 degrees and rebounds with the same spped at 45 degrees. What is the impulse given the wall? Homework Equations I= pf-pi/t The Attempt at a Solution I= mv-mv/t...

Homework Statement A billiard ball is struck by a cue as is shown in the figure. The line of action of the applied impulse is horizontal and passes through the center of the ball. The initial velocity v0 of the ball after impact, its radius R, its mass m, the acceleration due to gravity g, and...

Homework Statement I was trying to prove that Impulse = change in momentum. I end up proving it, but I'm not sure if the two assumptions I made are true. I also am not sure if my initial equations are completely true (I got them from a conceptual physics book which isn't heavy on equations...

Homework Statement A relative of yours belly flops from a height of 2.50 m (ouch!) and stops moving after descending 0.500 m underwater. Her mass is 62.5 kg. (a) What is her speed when she strikes the water? Ignore air resistance. (b) What is the magnitude of her impulse between when she...

I just need some quick input. When dealing with impulse and say a car crash, would you want to have a larger impulse and thus a larger change in momentum or a smaller impulse and smaller change in momentum? It seems to me that with a car going say 50 km/hr with a mass of 1000kg then your...

Homework Statement A ball of mass 1.5 kg is traveling downward at a speed of 10 m/s. It comes to rest in your hand in .25 s. What is the net impulse exerted on the ball? What is the average force exerted by the hand on the ball (Don't forget the gravitational force.) Homework Equations...