Action-reaction And Momentum Conservation Worksheet — Answer Key

Since the collision is elastic, we also know that the kinetic energy is conserved. After solving the equations, we get:

Forces are equal in magnitude, opposite in direction, and act on different objects (foot vs. ground). Since the collision is elastic, we also know

Action-reaction pairs are the mechanism by which momentum is transferred from one object to another. When object A pushes on object B (action), object B pushes back on A (reaction). This exchange changes their individual momenta, but the vector sum of their momenta stays the same. Since the collision is elastic