Question

7. A ball has mass of. 72 kg and is travelling at 19 m/s2 and its mechanical energy is 168 ). What is the potential energy of the ball?

O 33. 94 j

O 38. 04 j

O 129. 96

O 134. 6

Answer 1

Answer:

Explanation:

first find popotential energy

M.E=P.E+ K.E

K.E=1/2MV^2

K.E=1/2×72×261

K.E=9396

168=9396+P.E

P.e=-9228