According to Newton’s first law of motion, which of the following objects will change its motion? A. A train pulling on another train, each with the same amount of force.
B. A bike rider on a smooth and level road, pedaling at a constant rate.
C. A chair sitting on the floor with balanced forces acting in opposite directions.
D. A ball rolling across the floor with friction acting in the opposite direction.
A ball rolling across the floor with friction acting in the opposite direction.