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A body of mass 5 kg is thrown vertically...

A body of mass 5 kg is thrown vertically up with a kinetic energy of 490 J.The height at which the kinetic energy of the body becomes half of the origibnal value is

A

5 m

B

2.5 m

C

10 m

D

12.5 m

Text Solution

Verified by Experts

The correct Answer is:
a
Gain in P.E.=Loss in K.E.
`mgh=1/2xx490=245J`
`h=(2450)/(5xx9.8)=5m`
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