Question

A particle of mass 4kg moving with a speed of
10m/s collides with a train moving in an opposite
direction with a speed of 20m/s. If coefficient of
restitution e=1/2. calculate the final speed of the
particle (in m/s)
(2) 15
(3) 20
(4) 35
(1) 5​

Answer 1

Answer:

5 metre per second

Explanation:

COEFFICIENT OF RESTITUTION

is final speed divided by initial speed

so final speed is initial speed multiply by coefficient of restitution

final speed is 1/2*10=5m/s

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