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2. An 800-g bird has 47.0 J of gravitational potential energy when it is perched high up in a tree. Calculate the bird's vertical height from the ground.
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5 votes
5 votes
2. An 800-g bird has 47.0 J of gravitational potential

energy when it is perched high up in a tree.
Calculate the bird's vertical height from the ground.

User Bijal
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1 Answer

5 votes
5 votes
Ep = mgh = 47.0 J

m = 0.8 kg
g = 9.81 m/s2 (average)

h = Ep / mg = 47 J / 0.8 kg * 9.81 m/s2 = 5.989 m
User Sharon Soussan
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