Jayjay2912 Jayjay2912

Today at 5:00 AM
Physics

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Q 1. How does friction affect the mechanical energy of a system? Q 2. A roller coaster is at the stop of a hill and rolls to the top of a lower hill. If mechanical energy is constant, then on the top of which hill is the kinetic energy from the roller coaster motion greater?

Answer :

marialejandray marialejandray

Today at 5:05 AM

Answer:

Friction lowers (decreases) the kinetic energy which in turn decreases the mechanical energy of a system.
At the top of the second hill.

Explanation:

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