A 70-kg ice hockey goalie, originally at rest, has a 0.110-kg hockey puck slapped at him at a velocity of 33.5 m/s. Suppose the goalie and the puck have an elastic collision, and the puck is reflected back in the direction from which it came.
What would the final velocities of the goalie and the puck be in this case?
Assume the collision is completely elastic.
The total kinetic energy and the total linear momentum of the system are conserved in the case of the elastic collision. For instance, when two atoms collide, the total kinetic energy and the total linear momentum remain constant before and after the collision.
Answer and Explanation:
Let M and m be the masses of the goalie and the puck, respectively.
We call the initial and final (after the collision) velocities of the puck...
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from Chemistry: High SchoolChapter 16 / Lesson 4