An object has a mass of $2 k g$ $2 kg$ . The object's kinetic energy uniformly changes from $15 K J$ $15 KJ$ to $64 K J$ $64KJ$ over $t \in [0, 12 s]$ $t in [0,12s]$ . What is the average speed of the object?

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Answer 1 · 2017-03-27T02:24:18

The average speed is $187.73 m s^{- 1}$ $187.73ms^(-1)$

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An object has a mass of 2kg2 kg. The object's kinetic energy uniformly changes from 15KJ15 KJ to 64KJ 64KJ over t∈[0,12s]t in [0,12s]. What is the average speed of the object?