Question

practice time 1

1. which of the following situations does not describe a force?

a baseball hits a bat.
an astronaut floats in space.
a car slams on its brakes.
a tow truck pulls a car.

Explanation:

• Here, we need to understand what constitutes a force. When a baseball hits a bat, there is an impact force involved; when a car slams on its brakes, the friction force acts to slow it down; when a tow - truck pulls a car, there is a pulling force (tension force).
• An astronaut floating in space is in a state of weightlessness (due to the balance of gravitational and centrifugal forces in orbit, but the key point is that there is no unbalanced force causing a change in motion in the sense of these common force - action scenarios like hitting, braking, or pulling).

Answer:

An astronaut floats in space.