Question

In which situation does the reactive force between two colliding objects cause a physical change?
the exhaust from a rocket thrusting the rocket away from the ground
the exhaust from a rocket thrusting the rocket away from the ground

a baseball player swinging a bat and hitting a baseball, causing the bat to shatter
a baseball player swinging a bat and hitting a baseball, causing the bat to shatter

a swing hitting another swing, causing the second swing to move away
a swing hitting another swing, causing the second swing to move away

two bumper cars at an amusement park colliding, causing both cars to change direction

Answer 1

Two bumper cars at an amusement park colliding, causing both cars to change direction is the situation where the reactive force between two colliding objects causes a physical change.