a 4 kg rock is rolling 10 m/s find its kinetic energy

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23-04-2014
Chemistry

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a 4 kg rock is rolling 10 m/s find its kinetic energy

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JcAlmighty JcAlmighty · Answer 1 · 2017-02-20T09:55:34+01:00

JcAlmighty JcAlmighty

20-02-2017

The answer is 200 J

The kinetic energy (KE) is:
KE = 1/2 m * v²
m - mass of the object
v - velocity of the object

We have:
m = 4 kg
v = 10 m/s

KE = 1/2 * 4 kg * 10² m/s
KE = 200 J

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