In which situation does the reactive force between two colliding objects cause a physical change?

A: a swing hitting another swing, causing the second swing to move away
B: the exhaust from a rocket thrusting the rocket away from the ground
C: a baseball player swinging a bat and hitting a baseball, causing the bat to shatter
D: two bumper cars at an amusement park colliding, causing both cars to change direction

2 answers

The correct answer is C: a baseball player swinging a bat and hitting a baseball, causing the bat to shatter. In this situation, the reactive force between the bat and the ball causes a physical change, which is the shattering of the bat. In the other situations, the reactive force causes a change in motion or direction, but not a physical change.
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