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Physics, 20.02.2020 04:00 gabrielar80

A child pushes a toy car down a hill. After 5 seconds, the car has a kinetic energy of 115 J and a gravitational potential energy of 30 J. What is the car’s mechanical energy at that time?

A) 3.9 J
B) 85 J
C) 115 J
D) 145 J

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A child pushes a toy car down a hill. After 5 seconds, the car has a kinetic energy of 115 J and a g...

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