12. A 100-gram beach ball is dropped from a height of 1.8 m. After it bounces off the floor, it rises to a height of only 0.8 m. X a) How fast was it going just before it hit the floor and how fast was it going just after it bounced? b) What was the total impulse of the floor on the ball? c) How much energy was lost in the bounce? d) If the ball was in contact with the floor for 0.05 s, what was the average force of the I floor on the ball?

A fan blows a cart of mass m a distance d. The same fan blows a heavier cart of mass 2m through the same distance d.  Which cart experiences the larger impulse? Options: A) The lighter cart experiences the larger impulse. B) Both carts experience the same impulse. C) The heavier cart experiences the larger impulse. D) The answer cannot be determined.

An 0.8kg ball, initially at rest, is launched from a kicker's foot 30° above the horizontal with a velocity of 5.0m/s. The magnitude of the impulse exerted on the foot by the ball is most nearly   A. 2.75N•s   B. 2N•s   C. 1N•s   D. 2.5N•s   E. 3.46N•s

3. A baseball with a mass of 0.14kg is traveling horizontally with a speed of 42m/s and is hit by a bat. After the collision the ball moves with an angle phi = 35º above its incident path, and with a speed of 50m/s.a) Determine the impulse (force) exerted on the ball.b) Assuming the collision lasts 1.5ms, what is the average force?c) Determine the change in momentum of the bat.

20. In a car crash test which lasts 0.15 seconds, a car of mass 1500 kg approaches a wall at 15 m/s and bounces off going 2.6 m/s the other direction. Find the impulse on the car during the collision and the average net force exerted on the car. 15 m/s 2.6 m/s

1.) A car (mass=400 kg) is traveling down a country road (speed is 10 m/s) when it collides with a deer (mass=200 kg) which is running in the opposite direction (speed is 2 m/s). The collision results in the deer getting stuck on the windshield. Treat this collision using the 'conservation of momentum' principle: a) Draw a sketch - label each MASS and each VELOCITY (with arrows for direction). b) Calculate the final speed of the car (remember the deer is stuck on top of the car) after collision (Note: they stick together to form a single mass)

Two billiard balls collide in an elastic collision. Which statement about total energy and momentumof the two balls is true?a) both the energy and momentum of the system are conservedb) neither the energy nor momentum of the system are conservedc) the energy of the system is conserved, but the momentum is notd) the momentum of the system is conserved, but the energy is not

I. A lump of clay (m = 3.00 kg) is thrown towards a wall at speed v = 3.00 m/s. The lump sticks to the wall. (a) What kind of collision is it? Is momentum conserved during this collision? Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic energy lost during this collision. II. Same lump is thrown towards the same wall, but this time it bounces off the wall at speed of 3.00 m/s. (a) What kind of collision is it? Is momentum conserved during this collision? Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic energy lost during this collision. III. Same lump is thrown towards the same wall, but this time it bounces off the wall at speed of 2.00 m/s. (a) What kind of collision is it? Is momentum conserved during this collision? Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic energy lost during…

4. A 0.060 kg ball hits a wall with an initial speed of 30 m/s in the -x direction and bounces off with the same speed in the +x direction. The graph shows the force of the wall on the ball during the interaction. a) Draw the ball and the wall just before and just after the collision. b) What is the impulse of the force of the wall on the ball? b) What is the maximum value of the contact force Fmax between the wall and the ball? Fmax t (ms) 6 4.

A 3.0 kg object traveling 6.0 m / s east has a perfectly elastic collision with a 4.0 kg object traveling 8.0 m / s west. After the collision, the 3.0 kg object will travel 10.0 m / s to the west. a) What is the total moment before the collision? b) What is the total momentum of these objects after this collision?