When do roller coaster cars reach their maximum kinetic energy

Asked by admin @ 26/11/2021 in Physics viewed by 314 People

A computational model predicts the maximum kinetic energy a roller coaster car can have given its mass, the speed at the highest point of its journey, and the height of the highest point.

The mass is 250 kg, and the highest point of the journey is at 30 m, where the cart is at rest. What is its maximum kinetic energy?
73,500 J
468,750 J
0 J
112,500 J

Answered by admin @ 26/11/2021

Answer:

kinetic energy = 112,500 J

Explanation:

Given:

Mass m = 250 kg

Final velocity v = 30 m/s

Find:

kinetic energy

Computation:

kinetic energy = 1/2[mv²]

kinetic energy = 1/2[(250)(30)²]

kinetic energy = 1/2[225,00]

kinetic energy = 112,500 J

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