2. A 200g Hotwheels race car is released from a height h, travelling down a ramp then around a vertical loop with a30.0cm radius (R). Assuming this is an isolated

system: How much kinetic energy does the car have if it is just moving fast enough to make it around that vertical circle? (4 marks)а. What height was the car released from? How much work is done on the car by the centripetal force?