A body of mass 1000kg is released from a height of 10m above the ground. Determine its kinetic energy just before it strikes the ground .[g = 10ms-2]
-
A.
10J -
B.
103J -
C.
104J -
D.
105J
Correct Answer: Option D
Explanation
Ke = mgh
Ke = Pe
(frac{1}{2})MV2 = mgh
Ke = 1000 x 10 x 10
Ke = 100000J
Ke = 105J