Question

Describe a real-world example in which the amount of potential and kinetic energy change, but the total amount of mechanical energy stays the same.

Answer 1

n physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.