Understanding Uniform Circular Motion

What is required to keep an object moving in a circular path?

• A force applied away from the center

• No force is required

• A force applied in the direction of motion

• A constant net force towards the center

Which of the following is true about centripetal force?

• It acts in the opposite direction of motion

• It is the net force pointing towards the center

• It increases the speed of the object

• It is a type of force like gravity

What does centripetal acceleration do to an object's velocity?

• Keeps it constant

• Changes its direction

• Decreases its magnitude

• Increases its magnitude

How is frequency related to the period in circular motion?

• Frequency is the square of the period

• Frequency is the inverse of the period

• Frequency is half the period

• Frequency is twice the period

What is angular velocity measured in?

• Meters per second

• Degrees per second

• Radians per second

• Newtons

Which equation represents tangential velocity in circular motion?

• 2πR/T

• 2πF

• V^2/R

• M*A

What is the relationship between tangential velocity and angular velocity?

• Tangential velocity is angular velocity times the radius

• Tangential velocity is the inverse of angular velocity

• Tangential velocity is half of angular velocity

• Tangential velocity is the square of angular velocity

In a circular motion problem, what does the period represent?

• The speed of the object

• The distance covered in one second

• The time taken to complete one full cycle

• The force applied to the object

What force acts as the centripetal force for a car turning on a road?

• Friction

• Normal force

• Gravity

• Tension

How is the centripetal acceleration of Earth around the Sun calculated?

• M*V

• V^2/R

• 2πR/T

• F/R