The density of an object or quantity of matter is its mass divided by its volume. ... Non-standard conditions can result in a change of volume, affecting the density of the materials. Also, certain temperatures and pressures can result in a change the state of the matter, which also affects the density.
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Question - When a chld rolls down the hill, what energy is that?
Answer - Kinetic Energy
Kinetic Energy - "energy that a body possesses by virtue of being in motion."
Answer:
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