Mark pushes his broken car 130 m down the block to his friend\'s house. He has t

ID: 1449348 • Letter: M

Question

Mark pushes his broken car 130 m down the block to his friend's house. He has to exert a160 N horizontal force to push the car at a constant speed.

Part A

How much thermal energy is created in the tires and road during this short trip?

Express your answer to two significant figures and include the appropriate units.

Mark pushes his broken car 130 m down the block to his friend's house. He has to exert a160 N horizontal force to push the car at a constant speed.

Part A

How much thermal energy is created in the tires and road during this short trip?

Express your answer to two significant figures and include the appropriate units.

as potential energy and kinetic energy is not changing.

all work done will be in the form of heat due to friction

heat = Fd = 160 x 130 = 20800 J

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