Which kind of exercise is often used as therapy to rebuild muscle strength after an injury? isoaerobic isoanaerobic isokinetic isometric?

The answer is isokinetic exercise. This type of exercise uses specialized exercise machines that produce a constant speed no matter how much effort you expend and allows muscles to gain strength consistently all through the range of movement. Isokinetic exercises are often used for rehabilitation and recovery since it’s a controlled form of exercise. 

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy