Question

The expression \[\frac{1}{2}mu^2 - \frac{1}{2}mv^2\] represents which of the following physical quantities?

Options

• The work done by the force.

• The increase in potential energy.

• The decrease in kinetic energy.

• The total mechanical energy.

Answer 1

The decrease in kinetic energy.

Explanation:

This term is the initial kinetic energy (\[KE_i\]) minus the final kinetic energy (\[KE_f\]), which shows the amount by which kinetic energy has decreased.