1.5 Physics TEST

An object moving in a circular path at a constant, or “uniform,” speed is undergoing uniform circular motion.

• True

• False

The horizontal ____________________ of the tension is what is generating the constant force directed inward.

• x-component

• y-component

• z-component

Central forces in other examples of circular motion can include

• gravity and friction.

• the color

• gravity and inertia

Newton’s __________________says that when there is a net force acting on a mass there is acceleration.

• second law

• first law

• universal law

The vectors for the centripetal force and the centripetal acceleration are

• both directed toward the center of the circle

• both directed out of the circle

• both directed toward the center of the earth

The tangential velocity of an object in uniform circular motion is constant in speed but constantly changing in direction.

• Accurate Statement

• Innacurate Statement

Centripetal acceleration results from an object´s change in direction as it moves at constant speed in circle

• Accurate Statement

• Inaccurate Statement

The velocity of an object undergoing uniform circular motion is constant

• Inaccurate Statement

• Accurate Statement

An object moving at constant speed in a circle has no acceleration

• Inaccurate Statement

• Accurate Statement

As the object travels in its circular path at constant speed, the vectors of its tangential velocity point

• in continuously changing directions.

• in the same direction

• in two directions