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A body of mass 1 kg is thrown vertically...

A body of mass 1 kg is thrown vertically upwards with initial K.E. of 98 joule. The height at which its energy is reduced to half will be

A

2.5 m

B

1.25 m

C

5 m

D

10 m

Text Solution

Verified by Experts

The correct Answer is:
c
Gain in P.E. = Loss in K.E. =98-49=49 J.
`mgh=49 J implies h=(49)/(1xx9.8)=5 m`.
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