TOPIC 2.4 Newton’s First Law

Front

What is the net force on a system?

Back

The net force on a system is the vector sum of all forces exerted on the system.

Front

What is translational equilibrium?

Back

Translational equilibrium is a configuration of forces such that the net force exerted on a system is zero.

Front

What does Newton's first law state?

Back

Newton’s first law states that if the net force exerted on a system is zero, the velocity of that system will remain constant.

Front

How do forces affect a system's velocity in different dimensions?

Back

Forces may be balanced in one dimension but unbalanced in another. The system’s velocity will change only in the direction of the unbalanced force.

Front

What is an inertial reference frame?

Back

An inertial reference frame is one from which an observer would verify Newton’s first law of motion.