Question

I need help understanding the steps to get to the answer:

You are riding the new rollercoaster Fizzix Phun at your local amusement park. The technician with a mass of 90kg clears your car for 'takeoff'. The rollercoaster car full of people with a mass of 1242.5 kg is pulled up the initial hill by a lift device. The maintenance stairs up to the top of the hill consists of 11 flights of 30 stairs each wherein a single stair is 5cm high. The drop down the first hill is terrifyingly perpendicular to the ground. With what power in Watts does the GPE at the top of the first hill turn into KE at the bottom?

The answer is: 109000 Watts

Answer 1

time aken h 2h mass n12442.S (GPe) im-e