Solve the all parts of given question:
Question: A car is parked on a 20 degree hill when its parking brake fails and starts to rolls down the hill. If the hill is 20 ft. high,
Part A: How fast is it going at the bottom of the hill?
Part B: What is the car's acceleration on the hill?
Part C: How much time does it take to get to the bottom of the hill?
I need help to find how much time it takes to get to the bottom of the hill.