Question

question 4 of 25
you are sliding across a hockey rink and catch a hockey puck as you continue to slide. what type of collision is this?
a. elastic collision
b. recoil collision
c. perfectly inelastic collision
d. inelastic collision

Explanation:

To determine the collision type, we analyze each option:

• A. Elastic collision: Kinetic energy (KE) and momentum are conserved, and objects separate. This is not the case here (you catch the puck, so they move together).
• B. Recoil collision: Involves objects pushing apart (e.g., gun and bullet), which does not match catching a puck.
• C. Perfectly inelastic collision: Momentum is conserved, but KE is not; the objects stick together and move as one. Catching the puck means you and the puck move together, fitting this definition.
• D. Inelastic collision: A broader category where KE is not conserved, but "perfectly inelastic" is more specific (objects stick). Since you catch the puck (they move as one), "perfectly inelastic" is the most accurate.

Answer:

C. Perfectly inelastic collision