amantrai22
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Solve : a man drop a 10 kg stone from the height of 5 m.

1) calculate speed just before it hits the ground

2) what is the kinetic energy when it just strikes the ground?? ( g=10m/s^2)

 

PLEASE MENTION METHOD TOO....    THANK YOU!!

 

Answer :

Poda
v^2=u^2+2aS
v^2=0+2*10*5
v=10m/s

K=1/2*m*v^2
K=1/2*10*100
K=500J

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