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Questions  

In the elastic collision of a heavy vehicle moving with a velocity of 10 m s-1 and a small stone at rest, the stone will fly away with a velocity equal to

a
5ms−1
b
10ms−1
c
20ms−1
d
40ms−1

detailed solution

Correct option is C

v2=2u1 v2=2m1u1m1+m2 m1>>m2

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