Define wavelength frequency and speed for light waves if light has a long wavelength

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg