A 1200 kg automobile is moving at 30 m/s at a height of 5.0m above the bottom of a hill when it runs out of gasoline. The car coasts down the hill and then continues coasting up the other side of a hill until it comes to rest. Ignore frictional forces and air resistance.
a) what is the value of h, the highest position the car reaches above the bottom of the hill?
b) what is the speed of that car at the lowest point (bottom of the hill)?