Test: College Physics

A toy car is set up on a frictionless track containing a downward sloping ramp and a vertically oriented loop. Assume the ramp is  tall. The car starts at the top of the ramp at rest.

1.

What additional piece of information is necessary to calculate the maximum height of the loop if the car is to complete the loop and continue out the other side?

The exact shape of the loop

The distance between the end of the ramp and entrance to the loop

None

The value of 

The mass of the car

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