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Ответ:
Answer I believe option A
can you mark brainleist
Ответ:
126 J
Explanation:
The potential energy only depends on the vertical height from the ground level.
We consider the ground level to have zero P.E.
We get, when it is 4.5 m above the ground level,
P.E. = mgh
= 2.8×10×4.5
= 126 J