Uniform Circular Motion Quiz

What does uniform circular motion imply about angular velocity?

• It varies with the radius.

• It decreases over time.

• It remains constant.

• It is constantly increasing.

In uniform circular motion, what is the direction of tangential velocity?

• Towards the center of the circle

• Opposite to the direction of motion

• Perpendicular to the radius

• Along the radius

What is the role of centripetal acceleration in circular motion?

• It changes the direction of the velocity.

• It has no effect on the motion.

• It increases the speed of the object.

• It decreases the speed of the object.

How is centripetal force related to Newton's second law?

• It is the force that opposes motion.

• It is the force that stops the motion.

• It is unrelated to Newton's laws.

• It is the net force causing circular motion.

What does the sum of forces equal in the radial direction during uniform circular motion?

• Infinity

• Zero

• MA

• MV squared over R

In the context of the astronaut and yo-yo, what is the significance of the tension in the string?

• It is irrelevant to the motion.

• It provides the centripetal force.

• It increases the mass of the yo-yo.

• It opposes the centripetal force.

Why does the direction of the tension in the string always point towards the center?

• To maintain circular motion

• Because of gravitational pull

• To increase the speed

• To decrease the speed

What happens to the tension in the string if the radius of the circle is doubled?

• It doubles.

• It halves.

• It remains the same.

• It quadruples.

In the absence of gravity, what is the primary force acting on the yo-yo?

• Air resistance

• Gravitational force

• Frictional force

• Tension in the string

What is the effect of increasing the tangential speed on the tension in the string?

• It decreases the tension.

• It has no effect.

• It increases the tension.

• It reverses the direction of tension.