Answer
See the detailed answer below.
Work Step by Step
a) We have here work done by an external force on an object. This work will be converted to the kinetic energy of the object while the potential and thermal energies remain constant.
So, the example is
- You are pushing a cart that rolling without friction at a constant force forward on a horizontal floor surface.
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b) We have here work done by an external force on an object. This work will be converted to the thermal energy of the object while the potential and kinetic energies remain constant.
So, the example is
- You are pushing a box at a constant speed forward on a horizontal rough surface.
