Which statement describes an object acted on by balanced forces?

options:

Ball speeds up as it rolls down a hill.
Ball speeds up as it rolls down a hill.

A car is moving at a constant speed around a race track.
A car is moving at a constant speed around a race track.

A bus is stopped at a station waiting to pick up passengers.
A bus is stopped at a station waiting to pick up passengers.

A cars slows down at a red light.

1 answer

The correct statement that describes an object acted on by balanced forces is:

A bus is stopped at a station waiting to pick up passengers.

In this scenario, the forces acting on the bus are balanced; the forces that keep the bus stationary, such as friction and the brakes, are equal and opposite to any forces trying to move it.

The other options describe scenarios where there are unbalanced forces acting on the objects, causing them to accelerate or decelerate.