# physics

A bird has a mass of 0.2 kg and is flying 10 m above the ground with a speed of 7 m/s. What is the total mechanical energy of the bird? Acceleration due to gravity is g = 9.8 m/s2.

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1. Total mechanical energy
= KE + PE
(assume PE at ground level = 0)

KE=(1/2)mv²
PE=mgh
h=height above ground in m
v=velocity in m/s

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2. 14.7

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posted by Jesus
3. 19.6

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posted by Jesus
4. the correct answer is 19.6

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2. 👎 5
posted by kelly
5. It is 24.5

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posted by Melanie

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