Physics
JAMB 2014
An object of mass 20kg is released from a height of 10m above the ground level. The kinetic energy of the object just before it hits the ground is
-
A.
200J
-
B.
4000J
-
C.
2000J
-
D.
500J
Correct Answer: Option C
Explanation
Kinetic Energy = mgh
= 20 x 10 x 10 J
= 2000J
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