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A 2-kilogram object falls 3 meters. a. How much potential energy did the object have before it fell? b. How much work was accomplished by the fall

Respuesta :

Below are the answers:

(a) Ep = mass x gravitational acceleration x height 
= 2kg x 9.8ms-2 x 3m 
= 58.8J 

(b) F = mg 
= 2kg x 9.8ms-2 
= 19.6N 
W = Fd 
= 19.6N x 3m 
= 58.8J 

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