Force and Motion

Front

What is the resistance that one surface or object encounters when moving over another?

Back

Friction

Front

What are forces that produce a nonzero net force, which changes an object's motion?

Back

Unbalanced forces

Front

What is the motion of a falling object when the only force acting on it is gravity?

Back

Free fall

Front

What force opposes the motion of objects that move through the air?

Back

Air resistance

Front

What law states that an object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force?

Back

Newton's First Law

Front

What is the term for the force that attracts objects toward the center of the Earth?

Back

Gravity

Front

What is the term for the rate of change of velocity of an object?

Back

Acceleration

Front

What is the formula for calculating force?

Back

Force = Mass x Acceleration (F = ma)

Front

What is the term for the tendency of an object to resist changes in its state of motion?

Back

Inertia

Front

What is the effect of balanced forces on an object's motion?

Back

Balanced forces do not change an object's motion.