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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
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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 30m, where the cart is at rest. What is the maximum kinetic energy?

A. 113500 J
B. 468750 J
C. 0 J
D. 73500 J

User Kawan
by
4.9k points

2 Answers

6 votes

Answer:

73,500 J

Step-by-step explanation:

100% Correct

User Ryan Fiorini
by
5.1k points
1 vote

Answer:

D

Step-by-step explanation:

The decrease in potential energy is equal to the increase in kinetic energy.

mgh

250 x 9.8 x 30

=73, 500

User BradStevenson
by
5.2k points
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