Question

Two bodies of equal masses m1 and m2 moving along the same straight line with velocity 3m/s and -5m/s respectively collide elastically. Their velocities after the collision will be respectively

Answer 1

m1 will move with - 5m/s and m2 with 3m/s.

Their velocity will interchange as total transfer of kinetic energy from one to another occurs

Answer 2

Answer:

The velocities of bodies of mass m₁ and m₂ after the collision are -5m/s and 3m/s respectively.

Explanation:

We will consider the following conditions to solve this question,

• For elastic collision, the coefficient of restitution is equal to one.
• When bodies of equivalent mass collide, their velocities are exchanged as well.

From the question we have,

m₁=m₂

The initial velocity of mass m₁=3m/s

The initial velocity of mass m₂=-5m/s

After collision,

The final velocity of mass m₁=-5m/s

The final velocity of mass m₂=3m/s

Hence, after the collision, the velocities of bodies of mass m₁ and m₂ are -5m/s and 3m/s, respectively.

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