AP Physics 1 Test Uniform Circular Motion & Law of Gravitation

Front

What is mass?

Back

Mass is a measure of the amount of matter in an object, which does not change regardless of the gravitational field.

Front

What is uniform circular motion?

Back

Uniform circular motion is the motion of an object traveling at a constant speed in a circular path.

Front

What is the formula for centripetal acceleration?

Back

Centripetal acceleration (a_c) is given by the formula a_c = v²/r, where v is the linear speed and r is the radius of the circular path.

Front

What is the relationship between gravitational force and distance?

Back

Gravitational force decreases with the square of the distance between two objects, as described by Newton's law of universal gravitation.

Front

What is the formula for gravitational force?

Back

The gravitational force (F) between two masses (m1 and m2) separated by a distance (r) is given by F = G(m1*m2)/r², where G is the gravitational constant.

Front

What is the direction of the net force in uniform circular motion?

Back

The net force in uniform circular motion is always directed toward the center of the circular path.

Front

What is linear speed in circular motion?

Back

Linear speed is the distance traveled by an object in circular motion per unit of time, often measured in meters per second (m/s).

Front

How does mass affect gravitational force?

Back

Gravitational force is directly proportional to the product of the masses of the two objects; as either mass increases, the gravitational force increases.

Front

What happens to gravitational force if the distance is tripled?

Back

If the distance between two objects is tripled, the gravitational force becomes one-ninth (F/9) of its original value.

Front

What is the difference between weight and mass?

Back

Weight is the force exerted by gravity on an object, which can change with the gravitational field, while mass is constant.