Question

Model In this problem, the objects of interest are the pucks. Since their dimensions are small compared to the distance traveled, it is reasonable to model them as small particles, as suggested in the strategy. Another reasonable assumption is that the effects of air resistance on small, slowly moving objects such as the pucks, and of friction between the puck and the smooth ice, are both very small. Therefore, in the absence of friction and air resistance, the pucks can be modeled as particles moving with constant velocity. In addition, because the problem states that the pucks are given a"quick push, it is appropriate to ignore the motion of the pucks as they are being pushed and simply think of them as already moving with constant velocity Visualize Part A Which of the motion diagrams shown here best represents the motion of puck A prior to the collision? aA D UA а, E UA ос O D O F

Answer 1

As the puck is moving with a constant velocity, the net acceleration of the puck will be zero.

Therefore the motion diagram A best represents the motion of puck A prior to the collision.

Answer is A (motion diagram).