TOPIC 2.5 Newton’s Second Law

Front

What are unbalanced forces?

Back

Unbalanced forces are a configuration of forces such that the net force exerted on a system is not equal to zero.

Front

State Newton's second law of motion.

Back

Newton’s second law of motion states that the acceleration of a system’s center of mass has a magnitude proportional to the magnitude of the net force exerted on the system and is in the same direction as that net force.

Front

When will the velocity of a system's center of mass change?

Back

The velocity of a system’s center of mass will only change if a nonzero net external force is exerted on that system.