Conservation of Momentum A 50 g bouncy ball traveling east at a rate of 10 m/s collides elastically with 25 g bouncy traveling at a rate of 15 m/s west. 1. What are the final velocities of each ball? 2. How much energy was lost in the collision? A 50 g bouncy ball traveling east at a rate of 10 m/s collides INelastically with 25 g bouncy traveling at a rate of 15 m/s west. 1. What are the final velocities of each ball? 2. How much energy was lost in the collision?|
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- In which of the following collisions would you expect the kinetic energy to be conserved? A. A bullet passes through a block of wood.B. Two bull elk charge each other and lock horns.C. Two asteroids collide by a glancing blow, but do not actually hit each other, their only interaction being through gravity.D. Two cars with springlike bumpers collide at fairly low speeds.Two particles approach each other with equal and opposite speed, v. The mass of one particle is m, and the mass of the other particle is nm, where n is just a constant factor. Snapshots of the system before, during, and after the elastic collision are shown. m Before nm What is the value of n? Collision V.final m n = After V nm After the collision, the first particle moves in the exact opposite direction with speed 1.30v, and the speed of the second particle, Unm,final, is unknown. nm, finalA 98.0 kg hockey player skating at 2.12 m/s 32° S of W is body checked by an 87.0 kg opponent who is skating at 0.900 m/s N. They collide inelastically and stick together. a. What is the velocity of the pair immediately after the collision? solve using TRIG
- A 32-kg object #1 having an initial velocity of 42 m/s to the right collides with a 68kg object #2 moving to the left at 17 m/s. The coefficient of restitution for this collision is 0.68. Take right as the + direction.  A. Identify the type of collision. B. Determine the velocities of both objects following the impact. Identify as right or left in each case. C. Determine the percent of the initial kinetic energy lost in the collision.A 1 500 kg car travelling at 25 m/s collides with a 2 500 kg van stopped at a traffic light. As a result of the collision, the two vehicles become entangled. With what initial speed will the entangled mass move off, and is the collision elastic or in elastic? (K:1) SPEED TYPE OF COLLISION A. 9.4 m/s Flastic B. 9.4 m/s Inclastic C. 15 m/s Elastic D. 15 m/s Inclastic Select one: O C D QA B OTwo particles with different initial momentum collide and stick to each other. Compared to before the collision, the system of two objects after the collision has? Explain. A. Less total momentum and less kinetic energy B. Less total momentum but the same amount of total kinetic energy. C. Not enough information is given to decide. D. The same amount of total momentum and the same total kinetic energy. E. The same amount of total momentum, but less total kinetic energy.
- 2. A cart of mass 300 g moving along a straight track hits a 500 g cart which had been sitting still. After the carts hit, the 300 g cart has a speed of 1.0 m/s back to where it came from, while the 500 g cart is moving forward at 3.0 m/s in the same direction as the 300 g cart had been going at the beginning. How fast was the 300 g cart going before it hit the 500 g cart?A golf ball has a mass of 46 g. Just after being struck, the ball reaches a speed of 61 m/s. i. What is the momentum of the ball just after impact? ii. The collision between the club and the ball lasts (0.0005 s). What is the average force exerted by the club head on the ball? iii. The club head of a driver has a mass of 200 g. If the club speed is 42 m/s just before impact, what is the club speed just after impact, due to the reaction force exerted by the ball on the club?A 50 kg teen running 6 m/s jumps onto a 6 kg skateboard that is stationary. After he jumps on, the combined speed of the skateboard and the teen is 5.4 m/s. The kinetic energy lost in the collision is: A. both 11% and 96 joules B. 96 j C. 11% D. 0
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