The height and the number of the hill won't affect the final speed of the
roller coaster.
The rollercoaster is normally found in parks and are used for leisure . It
involves the train going up at a high speeds as a result of the absence of
frictional force on the system.
Factors which affect the speed of the rollercoaster when friction is absent
is the mass only as the height and the number of hill doesn't play any role
in affecting the final speed of it.
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