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you need to determine if the object has KE or GPE or both. Then find their values. 

 

A 2-kg bowling ball rolls at a speed of 5 m/s on the roof of the building that is 40 tall.

 

Circle one: KE / GPE / both

 

Show your work for finding the values of each type of energy the object has:

 

Would the answer be KE since the ball is moving?

 Feb 4, 2019
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The ball has KE since it is MOVING.

The ball ALSO has GPE since it is 40 m up in the air (see previous posting)

 

K.E. = 1/2 mv^2  =  1/2  2 kg (5 m/s)^2 =   25  kg-m^2/sec^2 = 25 j

 Feb 4, 2019

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