alleryStart learning →A ball has KE 20 J and GPE 30 J. With no losses, GPE falls to 10 J. New KE?
A10 J
B20 J
C50 J
D40 J
Answer & Solution
Correct answer: D. 40 J
Total mechanical energy remains 50 J, leaving 50 − 10 = 40 J of kinetic energy.
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