Mark pushes his broken car 150 m down the block to his friend's house. He has to exert a 110 N h

step 1 Hello everyone. In this problem, we're asked to calculate the thermal energy generated by Mark a

Mark pushes his broken car 150 m down the block to his...

Mark pushes his broken car $150 \mathrm{m}$ down the block to his friend's house. He has to exert a 110 N horizontal force to push the car at a constant speed. How much thermal energy is created in the tires and road during this short trip?

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Key Concepts

Work

Work is the product of a force acting over a distance. It quantifies the energy transferred to or from an object when a force causes a displacement. This principle is crucial for understanding how pushing or pulling an object transfers energy, as in the case of a car being pushed.

Energy Transformation

Energy transformation refers to the process of converting energy from one form to another. In problems involving friction, mechanical energy is typically converted into thermal energy. This concept is essential to explain how the work done by a force can result in heat generation, rather than observable changes in motion, when the object moves at constant speed.

Friction and Thermal Energy

Friction is the force that opposes the relative motion between two surfaces in contact. When work is done against friction, the lost mechanical energy is mostly converted into thermal energy. This conversion is what heats the surfaces in contact, such as tires and road, during motion.

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