Understanding Centripetal Force

What is the direction of centripetal acceleration in circular motion?

• Perpendicular to the velocity

• Parallel to the velocity

• Towards the center

• Away from the center

Which of the following is the correct formula for centripetal acceleration?

• v/r

• v^2/r

• r/v^2

• r^2/v

What happens to an object in circular motion if the centripetal force is removed?

• It moves in a straight line

• It continues in a circle

• It spirals outward

• It stops immediately

How is centripetal force calculated?

• Mass times velocity

• Mass times centripetal acceleration

• Velocity squared times radius

• Radius divided by mass

What is the unit of centripetal force?

• Pascal

• Newton

• Watt

• Joule