A. 600J
B. 150J
C. 300J
D. 450J
Correct Answer:
Option C – 300J
Explanation
K.E just before hitting the ground
= P.E at the maximum height (conservation of mechanical energy)
K.E = P.E = mgh = 1.5 x 10 x 20
= 300 J
A. 600J
B. 150J
C. 300J
D. 450J
Correct Answer:
Option C – 300J
Explanation
K.E just before hitting the ground
= P.E at the maximum height (conservation of mechanical energy)
K.E = P.E = mgh = 1.5 x 10 x 20
= 300 J
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