Homework Help: physics

Posted by bola on Tuesday, February 23, 2010 at 3:04am.

Assume the height of a hill is 50m, calculate:
a.the velocity of a car at the bottom ofg the hill
b.the height at which it will have half the speed. Assume the car starts from rest at the top of the hill.

physics - drwls, Tuesday, February 23, 2010 at 4:01am
You can only make this calculation if you assume that the car is "coasting" in neutral with zero friction. These are rather unrealistic assumptions for driving a car.

I suggest you make these assumptions anyway use conservation of energy to predict the speeds.

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