Question

q 2. two hockey - pucks collide, having their centers vertically aligned, with the initial velocities shown in the figure. puck 1 most likely passed nearest which labeled point after the collision?

Explanation:

Step1: Consider conservation of momentum

In a two - dimensional collision, we consider the conservation of momentum in both x and y directions. However, without more information like masses of pucks and nature of collision (elastic or inelastic), we can use a qualitative approach based on the initial velocities. Puck 1 has an initial velocity at an angle and Puck 2 has a vertical velocity. When they collide, Puck 1 will have its direction changed due to the interaction with Puck 2.

Step2: Analyze the direction change

Since Puck 2 is moving vertically upwards and collides with Puck 1, Puck 1 will gain some additional upward momentum component. Also, its original horizontal - component of momentum will still be there. Looking at the options, the point that is consistent with an upward and horizontal displacement from the initial path of Puck 1 is point r.

Answer:

r