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A particle of mass 120 g moving at speed...

A particle of mass 120 g moving at speed of 750 cm/s is acted upon by a variable force opposite to its direction of motion. If the velocity of the particle becomes 250 cm/s along the direction of force, find the value of time 't' for which acted.

A

6sec

B

9sec

C

18sec

D

27 sec

Text Solution

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The correct Answer is:
C
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