Uniform Circular Motion: Crash Course Physics #7

What describes uniform circular motion?

• Movement along a straight line at a constant speed.

• Movement along a circular path at a consistent speed.

• Movement along a circular path with a changing speed.

• Movement along a curved path with varying speed.

In uniform circular motion, what is the direction of an object's velocity at any given moment?

• Towards the center of the circle.

• Away from the center of the circle.

• Perpendicular to the radius, along a tangent.

• Along the curved path of the circle.

If an object is moving in a circular path and the force causing it to turn is suddenly removed, what will happen to the object?

• It will stop moving immediately.

• It will continue to move in a circular path.

• It will fly off in a straight line, tangent to its previous path.

• It will move directly towards the center of the circle.

What is the name of the force that causes an object to move in a circular path?

• Centrifugal force

• Gravitational force

• Centripetal force

• Magnetic force

What is a fictitious force?

• A force that pushes objects towards the center of a circle.

• A force that is actually there to create motion.

• A force that doesn't really exist but feels real from a certain perspective.

• A force that causes objects to move in a straight line.

In uniform circular motion, what does the "period" (T) represent?

• The number of revolutions per second.

• The time it takes for an object to complete one full revolution.

• The distance traveled in one revolution.

• The speed of the object.

If a centrifuge ride takes 2 seconds to complete one full revolution, what is its frequency of motion?

• 2 Hz

• 0.5 Hz

• 1 Hz

• 4 Hz

How does increasing the speed of an object in circular motion affect its centripetal acceleration, assuming the radius remains constant?

• The acceleration decreases.

• The acceleration increases.

• The acceleration remains the same.

• The acceleration becomes zero.