Check your entry behaviour

A roller coaster car is released from the top of a hill and travels down the track. Then what happens to acceleration of a car?
Accelerates
Decelerates
Nothing
At the top of the hill, what kind of energy is possessed by a car?
Potential energy
Kinetic energy
When a car travels down the track, then what change in energy is observed?
No change
Cannot determine
Potential to Kinetic energy
Kinetic to potential energy
When one energy changes from one form to other, what we call that process?
Law of conservation of momentum
Law of conservation of energy
Unknown
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