Question: A 50 kg cart is moving across a friction-less floor at 2 m/s. A 70 kg boy, riding the cart, jumps off so that he hits the floor with zero velocity.
1. What impulse did the boy give to the cart?
2. What was the velocity of the cart after the boy jumped?
A 0.15 kg ball hits a wall with a velocity of (6.00 m/s) i + (6.50 m/s) j + (5.50 m/s) k. It rebounds from the wall with a velocity of (2.00 m/s) i + (3.50 m/s) j + (-3.20 m/s) k
a) What is the change in the ball's momentum?
(__i +__j +__k ) kg · m/s
b) What is the impulse on the ball?
(__i +__j +__k ) N · s
See attached file.
A 8.0 kg bowling ball is rolling down the alley with a velocity of 2.9 m/s. For each impulse, a and b, as shown in Figure 9-3, find the resulting speed and direction of motion of the bowling ball.
_________m/s in the same direction or in the opposite direction?
A gun fires a bullet of mass 17 grams out of a barrel 24 cm long. The bullet is accelerated down the length of the barrel with an average force of 16 Newtons.
Using theImpulse-MomentumTheorem, determine the velocity with which the bullet exits the barrel.
What average force is exerted by the individual holding the gun
Discuss the following in terms of impulse and momentum:
Why are padded dashboards safer in cars?
Why are nylon ropes, which stretch under stress, favored by mountainclimbers?
Why is it preferrred that railroad cars be loosely coupled with slack between cars?
While being thrown, a net force of 132 N acts on a baseball (mass = 140 g) for a period of 4.5 X 10^-2 seconds.
The balls initial velocity is zero before leaving the pitchers hand.
When the batter hits the ball, a net force of 1320 N, opposite the direciton of the balls initial motion, acts on the ball for 9 X 10^-3 seconds du
Force of a Baseball Swing. A baseball has mass 0.145 kg.
1. If the velocity of a pitched ball has a magnitude of 45.0 m/s and the batted ball's velocity is 55.0 m/s in the opposite direction, find the magnitude of the change in momentum of the ball.
2. Find the magnitude of the impulse applied to it by the bat.
3. If t
An 85-kg jogger is heading due east at a speed of 2.0 m/s. A 55-kg jogger is heading 32° north of east at a speed of 3.0 m/s. Find the magnitude and direction of the sum of the momenta of the two joggers.