When sunlight shines on a leaf the leaf looks green why does the leaf look green It absorbs all the white light and turn most of it into green light
It absorbs only the green part the light
It reflects the green light waves and absorbs most of the rest
It gives off its own green light

Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.