Question 8. In a classroom demonstration, two identical low-friction dynamics carts are pushed toward each other such that they are travelling at the same speed when they collide. Immediately after the collision the carts come to a complete stop. The teacher challenges his students to describe this collision. Some of the students' descriptions are provided below. I II III IV Student Descriptions of the Collision of Two Carts Before the collision occurs the carts have the same momentum. Before the collision occurs the carts have the same kinetic energy. This collision is an example of an elastic collision. This collision is an example of an inelastic collision. The descriptions that are appropriate for this collision are A. I and III B. II and III C. II and IV D. I and IV

Question 8. In a classroom demonstration, two identical low-friction dynamics carts are pushed toward each other such that they are travelling at the same speed when they collide. Immediately after the collision the carts come to a complete stop. The teacher challenges his students to describe this collision. Some of the students' descriptions are provided below. I II III IV Student Descriptions of the Collision of Two Carts Before the collision occurs the carts have the same momentum. Before the collision occurs the carts have the same kinetic energy. This collision is an example of an elastic collision. This collision is an example of an inelastic collision. The descriptions that are appropriate for this collision are A. I and III B. II and III C. II and IV D. I and IV

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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When 2 blocks smash into each other in a maximally inelastic collision which of the following is true: Choose ALL CORRECT answers. You may have to select more than one statement below: Mechanical Energy was NOT conserved during the collision The bigger block travels with a bigger velocity than the smaller block after the collision. momentum was conserved during the collision momentum was not conserved during the collision The maximum amount of mechanical energy that could be lost in the collision was lost. The final velocity of each block must be zero. The objects have the same final velocity. O Mechanical Energy WAS conserved during the collision
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A 12 kg block, initially moving to the right, collides with a stationary 18 kg block, causing the 18 kg to move off to the right. The collision is perfectly elastic. We may conclude that after the collision, the 12 kg block will stop. move to the right with less speed than it had before the collision. move to the right with the same speed that it had before the collision. move to the left with less speed than it had before the collision. move to the left with the same speed that it had before the collision.
*Problem 2: т An object is initially moving in the positive y-hat direction with a speed of 1 The object then explodes into three S m pieces. Piece 1 has a mass of 0.5 kg and moves with a velocity of 2£ + 3ŷ. Piece 2 has a mass of 0.35 kg and m moves with a velocity of -3£ + 1ŷ. Piece 3 has a mass of 0.15 kg. a) Draw a picture of the situation. b) Apply conservation of momentum to this problem. c) Find the velocity of piece 3. (Answer: 0.33£ – 5.7ŷ)
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complete the following 3 steps. 1. Indicate what your chosen system is (which objects are included in the system?) as well as your initial and final instants. Explain how your choice will help you solve the problem. 2. Draw a momentum-impulse bar chart for your chosen system that is consistent with the information given. 3. Write an equation using the bar chart as a guide and solve for any unknowns. A 6-kg bowling ball moving at 3 m/s hits a single 2-kg pin, knocking it forward at 6 m/s. If the collision took 0.050 s, what average force was exerted on the pin?
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Which of these statements are true? Explain why below: a) If an elastic collision occurs, then the change in total momentum is unpredictable. b) If an elastic collision occurs, then the total momentum is increased by the collision. c) If an elastic collision occurs, then the total momentum is decreased by the collision. d) If an elastic collision occurs, then the total momentum remains essentially unchanged by the collision. Explanation:___________________________________________________________________________________________________________________________________________________________________________________________________________________________________