The car in Figure P2.69 passes a bright streetlight at constant speed, casting a shadow on a wall on the other side of the street. For simplicity, assume that car and light are at the same height.

(a) Which is greater: the average speed of the car or the average speed of the shadow's leading edge?

(b) Is there any instant at which the speed of the shadow's leading edge is the same as the speed of the car? If so, what is the car's position relative to the streetlight at that instant? If not, why not?

Data from Figure P2.69