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COMEDK2013PhysicsCenter of Mass, Momentum and Collision

Two bodies of masses 1 ~kg and 2 ~kg have equal momentum, then the ratio of their kinetic energies is

Options

  1. A2: 1
  2. B3: 1
  3. C1: 3
  4. D1: 1

Correct answer

A. 2: 1

Step-by-step solution

Given, m₁=1 ~kg , m₂=2 ~kg The kinetic energy is related to momentum of body by the formula given as K= p² 2 m K₁ K₂ = m₂ m₁ = 2 1 ( momentum is same) the formula given as ( + momentum is same)

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