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## Homework Statement

A body of mass 2 kg thrown vertically with KE of 490 joules. If the acceleration due to gravity is 9.8 m/s^2 of the body becomes half its original value is given by:

a.50

b.12.5

c.25 m

d.10 m

## Homework Equations

PE=MGH

K.E=1/2MV^2

PE=KE

## The Attempt at a Solution

K.E=P.E

490=MGH

490=2*9.8*H

490=19.6*H

490/19.6=H

25=H

H=25 m

is it right ? or we have to half the value.