- #1
alijan kk
- 130
- 5
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.