Question

In elastic collision,
I. initial kinetic energy is equal to the final kinetic energy.
II. kinetic energy during the collision time $\Delta t$ is constant.
III. total momentum is conserved.
IV. kinetic energy during the collision time $\Delta t$ is not constant. Which of the above statements is/are correct ?

• A. Only I
• B. I, III and IV
• C. Only III
• D. Only II

Answer 1

Answer: (B)

In elastic collision, total momentum and kinetic energy will remain conserved.