Circular Motion

What is the direction of the velocity at point B, if the ball is revolving clockwise?

• up
• right
• down
• left

Which represents the acceleration of the ball?

• A
• B
• C
• D

The linear velocity is always _____ to the line of a circle.

• outwards

• towards the center

• tangent

• faster

Centripetal acceleration acts towards the ___________ of the circular motion

• center
• circumference
• outside
• radius

What is the force that causes centripetal acceleration when a car goes around a curve?

• Friction
• Gravity 
• Normal
• Tension

The velocity is always _____ to the line of a circle. 

• outwards
• towards the center
• tangent
• faster

Where is the net force when the rollercoaster is at the top of the loop?

• Towards the sky

• Towards the Right

• Towards the left

• Towards the center of the circle

What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?

• 5 m/s²

• 17.63 m/s²

• 10 m/s²

• 8.81 m/s²

What is the equation for centripetal force?

• v = 2πr/T

• a = v²/r

• F = mv²/r

• F = ma

What happens to the centripetal force exerted on an object if you triple the velocity?

• it increases to 3X
• it decreases to 6X
• it increases to 6X
• it increases to 9X