AP Physics Unit 2 Review

Front

What is Newton's First Law known as?

Back

The Law of Inertia states that an object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity unless acted upon by a net external force.

Front

What is the measurement of the gravitational force on an object?

Back

Weight is the force exerted by gravity on an object, calculated as the product of mass and gravitational acceleration (W = mg).

Front

What is the net force acting on an object in free fall at constant velocity?

Back

0 N. When an object is in free fall at constant velocity, the forces acting on it are balanced, resulting in a net force of zero.

Front

What type of friction does an object sliding across a surface experience?

Back

Kinetic friction is the force that opposes the motion of two surfaces sliding past each other.

Front

What keeps a tennis ball moving upward after it leaves a student's hand?

Back

Nothing. The ball simply has inertia, which is the tendency of an object to resist changes in its state of motion.

Front

Define inertia in the context of physics.

Back

Inertia is the property of an object to remain at rest or in uniform motion unless acted upon by an external force.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the gravitational force acting on that mass.

Front

What is the formula for calculating weight?

Back

Weight (W) = mass (m) × gravitational acceleration (g).

Front

What happens to the net force when an object is in equilibrium?

Back

The net force is zero when an object is in equilibrium, meaning all forces acting on it are balanced.

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest and prevents it from starting to move.