Question

an object takes 2s to reach the ground. what is its kinetic energy. ​

Answer 1

Explanation:

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While energy of motion is usually expressed as E = ½mv2, work (W) is more often thought of as force (F) times distance (d): W = Fd. If we want to change the kinetic energy of a massive object, we must do work on it. ... If the object is twice as heavy, it takes twice as much work to lift it the same distance.

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