A roller coaster starts at rest on the slope of a track , 26 m above the ground . it coasts down that slope and then climbs another , at which point it is 16 m above the ground . how fast is it moving at the top of this second slope? ignore friction .
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Given:
A roller coaster starts at rest on the slope of a track , 26 m above the ground . it coasts down that slope and then climbs another , at which point it is 16 m above the ground .
To find:
Speed at the top of 2nd slope ?
Calculation:
In this kind of questions, it is best to apply CONSERVATION OF MECHANICAL ENERGY PRINCIPLE :
So, Velocity at top of 2nd slope is 10√2 m/s.
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