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A truck moving on horizontal road toward...

A truck moving on horizontal road towards east with velocity `20ms^(1)` collides elastically with a light ball moving with velocity `25ms^(-1)` along west. The velocity of the ball just after collision

A

`65 ms^(-1)` towards east

B

`25 ms^(-1)` towards west

C

`65 ms^(-1)` towards west

D

`20 ms^(-1)` towards east

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The correct Answer is:
A
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