Calculate the kinetic energy of a 2kg ball moving at 5m/s

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.

Select the best definition for wavelength. the height of an oscillating electromagnetic wave the rate at which electromagnetic waves oscillate. the distance between two crests of an electromagnetic wave. the oscillations of electric and magnetic fields select the best definition for frequency. the oscillations of electric and magnetic fields. the height of an oscillating electromagnetic wave. the distance between two crests of an electromagnetic wave. the rate at which electromagnetic waves oscillate