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A body of mass 5 kg at rest under the a...

A body of mass `5 kg` at rest under the action of a force which gives its velocity given by `v = 3 xx t m//s`, here 't' is time in seconds. The work done by the force in two seconds will be

A

90 J

B

45 J

C

180 J

D

30 J

Text Solution

Verified by Experts

The correct Answer is:
`(1)`
`W = 1/2mv^(2)`
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NARAYNA-WORK , ENERGY & POWER -EXERCISE -II (H.W)
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