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olga nikolaevna [1]
3 years ago
14

a 2.80 kg mass is dropped from a height of 4.50 m. find its potential energy(PE) at the moment it is dropped. PLEASE HELP

Physics
1 answer:
Maurinko [17]3 years ago
4 0

Answer:

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

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