10. A rollercoaster cart begins at the bottom of a hill at rest. An external motor pulls a 1.2 x 10³ kg cart up to the topof the first hill. The power provided by the motor is 9.9 x10³ W and it takes the cart 35 s to reach the top of thefirst hill. The cart reaches the top of the first hill and is released with a speed of 7.0 m/s. There is no frictionbetween the track and the cart.A: Pictorial Representationlabel givers with symbolsEvent 1: Motor turns onEvent 2: Cart reaches the top of the first hill,motor turns offy₂-?Event 3: Cart reaches the top of the secondhill.ya10.088317B: Physics Representationenergy flow diagrams, energy bar chartsE+EFlow 1-2Flow 2-3ÖFF OFFD: Mathematical RepresentationComplete equations, describe steps, algebraic work, substitutions, final answer(a) What is the total work done by the motor on the cart? (Hint: rearrange the power equation)(Tum over!)(b) What is the speed of the cart when it travels over the second hill? (If you could not find the work the motor didin the previous question, you may assume the total energy of the system at moment 2 is 3.0 x 10³ J)

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Answered: 10. A rollercoaster cart begins at the…

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