Home Physics Work, Energy, Power and Collision Mix A body of mass , moving with a speed of , …
Physics Work, Energy, Power and Collision Mix MCQ (Single Correct)

A body of mass , moving with a speed of , collides head on with a stationary body of mass . Their relative velocity of separation after the collision is . Then

A
The coefficient of restitution is 0.5
B
The impulse of the collision is 7.2 N-s
C
The loss of kinetic energy due to collision is 3.6 J
D
The loss of kinetic energy due to collision is 7.2 J

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The correct answer is:
CHECK THE SOLUTION.

(a, b, c)

, , ,

Relative velocity of approach

Relative velocity of separation (given)

Coefficient of restitution

Loss in kinetic energy

Final velocity of m 1 mass,

Impulse of collision = change in momentum of mass m 1 (or m 2 ) = m 1 v 1 – m 1 u.

.

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