Consider a device designed to measure speed. It consists of a "hand" attached to a rod that can slide through a bushing. A spring resists the motion resulting from an object being "caught" in the glove. A stick attached to the rod marks a line on an index card, indicating the motion of the rod against the spring.

Find the spring constant, k, that will result in a deflection, d = 5cm, of the rod when an object with a mass of 160g and a velocity of 150 km/h is caught.

part 2)