Pluto revolves around a star instead of our SUN. So, it's an "Exo-planet" rather than a Planet. It has declared in 2006 by the scientists.
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Answer:
the center of mass rises because the whole object rises up on the ramp thing so the center of mass rises
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Explanation:
Answer:

Explanation:
The kinetic energy of an object is given by
where
is the mass of the object and
is the velocity of the object.
We can set up the following equations with the information given:

For part B, we have the same equation, but kinetic energy is now
.
Therefore:
.