Inelastic Collision and Rebound
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Questions and Answers

A ball hits the floor and rebounds after an inelastic collision. In this case

  • the momentum of the ball just after the collision is the same as that just before the collision
  • the mechanical energy of the ball remains the same in the collision
  • the total momentum of the ball and the earth is conserved (correct)
  • the total energy of the ball and the earth is conserved
  • Two identical balls marked 2 and 3. in contact with each other and at rest on a horizontal frictionless table, are hit head-on by another identical ball marked 1 moving initially with a speed v as shown in the figure. Assume the collision is elastic, then mark out the correct statement.

  • Ball 1 comes to rest and ball 2 and 3 moves with speed v
  • Ball 1 and 2 come to rest and ball 3 moves with speed v (correct)
  • Each ball moves with speed v
  • None of the above
  • A body starts moving from rest in straight line under a constant power source. Its displacement in time t is proportional to

  • t^1/2
  • t
  • t^3/2 (correct)
  • t^2
  • If the length of the string is l = 10/3 m , and ratio of maximum tension to minimum tension is 4:1 . Find the velocity at the highest point.

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    Description

    A ball rebounds after an inelastic collision with the floor. Understand the physics behind this scenario. Solve problems and answer questions related to this topic.

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