A conveyor belt is moving horizontally with a constant speed of 7 m/s (wrt earth). a bag of sand with a mass of 100kg is dropped onto the belt from a negligible height. The coefficient of kinetic friction between the belt and bag has a value of .35, and the static coefficient is .8
a.) What is displacement of the bag (wrt earth) by the time it reaches the speed of the belt?
b.) same question, wrt belt?