An 830-kg roller coaster car drops from rest at a height of 93 m along a...

 

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An 830-kg roller coaster car drops from rest at a height of 93 m along a frictionless track. What is the velocity of the roller coaster at the top of a second hill that is 65 m high? What average force is required to bring the car to a stop along a 110 m stretch of horizontal track at ground level at the end of the ride? m h h 0 The velocity of the roller coaster is The average force required is Energy at hill 1 = Energy at hill 2 Initial energy External j work = Final energy PE PE, KE PE W N m/s. d An 830-kg roller coaster car drops from rest at a height of 93 m along a frictionless track. What is the velocity of the roller coaster at the top of a second hill that is 65 m high? What average force is required to bring the car to a stop along a 110 m stretch of horizontal track at ground level at the end of the ride? m h h 0 The velocity of the roller coaster is The average force required is Energy at hill 1 = Energy at hill 2 Initial energy External j work = Final energy PE PE, KE PE W N m/s. d