In an elastic collision between two bodies, which quantity is conserved in addition to momentum?

Answer and explanation

Correct answer: B. Kinetic energy

An elastic collision conserves both momentum and total kinetic energy.
Answer: Kinetic energy.
Why not the others: Velocity of each body: velocities change in a collision. Mass of each body only: that is always true but is not the distinguishing property. Potential energy only: kinetic energy is what is conserved.

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In an elastic collision between two… | EJU Japan Mechanics