What is his kinetic energy when his potential energy reduces to 1000 J? Express your answer to...

Question:

What is his kinetic energy when his potential energy reduces to 1000 J? Express your answer to two significant figures and include the appropriate units

Conservation Of Energy :

In the conservation of energy, the energy that is being converted from one form into another remains constant during the conversion, For example, when an object is placed at some height and allowed to fall from that certain height than the potential energy of the body will gets converted into the kinetic energy.

Answer and Explanation:

The question is incomplete. It should also say the value from which the P.E. has reduced to 1000J to figure out the change in P.E. We thus to solve the problem assume that the change in P.E. is 1000J
\

Given

Reduction in the potential energy is {eq}\Delta P.E=1000\ J {/eq}

For the expression of mechanical energy we have :

{eq}M.E=P.E+K.E {/eq}

Here, the mechanical energy should remain constant during the conversion and the reduction of the potential energy will be converting into the increase in the kinetic energy and the for 1000 J reduction in potential energy kinetic energy will increase by 1000 J.

Thus, the increase in the kinetic energy in two significant figures will be {eq}1.0\times 10^{3}\ J {/eq}


Learn more about this topic:

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Energy Conservation and Energy Efficiency: Examples and Differences

from Geography 101: Human & Cultural Geography

Chapter 13 / Lesson 9
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