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A 4 kg bowling ball rolls at a speed of 5 m/s on the roof of a building that is 30 meters tall. What is its kinetic energy? A. 10 J B. 50 J C. 120 J D. 1,176 J
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A 4 kg bowling ball rolls at a speed of 5 m/s on the roof of a building that is 30 meters tall. What is its kinetic energy?

A. 10 J
B. 50 J
C. 120 J
D. 1,176 J

User Alex Klimashevsky
by
4.6k points

1 Answer

4 votes

ans: B

Kinetic energy =
(1)/(2) mv^(2)

=
(1)/(2) (4)(5^(2) )

= 50J

ps. the height will only affect its potential energy, not kinetic.

User Qi Zhang
by
5.1k points
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