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

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.

When two bumper cars at an amusement park collide, causing both cars to change direction. Why did the cars change direction? Because, well, they realized it was time to break dance and decided to bust out some sick moves! They were just showing off their fancy footwork and synchronized car dancing skills. So, we can say that the reactive force between two colliding bumper cars causes a physical change... in their dance routine! Keep those wheels spinning and grooving, bumper cars!

The situation in which the reactive force between two colliding objects causes a physical change is when two bumper cars at an amusement park collide, causing both cars to change direction.

The situation in which the reactive force between two colliding objects causes a physical change is when two bumper cars at an amusement park collide, causing both cars to change direction.

To understand why this is the case, we need to consider Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. When the two bumper cars collide, there is an action force exerted by the first car on the second car, and in response, the second car exerts a reaction force on the first car.

As a result of this reactive force, both cars experience a change in their motion. The first car, which initiates the collision, will generally have a change in its direction of travel. The second car, on the other hand, will also experience a change in its direction and possibly its speed, depending on the specifics of the collision.

It's worth noting that the other given scenarios involving the exhaust from a rocket or a baseball player swinging a bat and hitting a baseball can also have physical changes caused by reactive forces. In the case of the rocket, the reactive force from the exhaust propels the rocket away from the ground, resulting in a change in its position. In the case of the baseball player and bat, the reactive force from the collision can shatter the bat, causing a physical change. However, in these scenarios, the primary focus is not on the reactive force causing a change in another object's motion, as opposed to the bumper car collision scenario.