4. A 100 kg car is at rest at point A. It rolls down a frictionless track and reaches the other side of the hill at posi

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4 A 100 Kg Car Is At Rest At Point A It Rolls Down A Frictionless Track And Reaches The Other Side Of The Hill At Posi 1 (70.89 KiB) Viewed 47 times

4. A 100 kg car is at rest at point A. It rolls down a frictionless track and reaches the other side of the hill at position D. The system is made up of the car, track and Earth. Use g = 10 m/s to simplify the values. Height (m) 30 20 10 a) Calculate the gravitational potential energy of the car at point A. Show all work. b) Calculate the kinetic energy at point C. Show all work, Calculate the velocity at point C. Show all work. d) At point D, the car is at a height of 20 m above the ground. If the car is only moving at 8 m/s when it reaches point D, how much energy was converted into heat and sound? Show all work.