centripetal acceleration

Which represents the acceleration of the ball?

• A
• B
• C
• D

Which of the following depict the speed of the blowing ball?

• A
• B
• C
• D

A horse gallops around a circular arena.  The centripetal force on the horse is ___.

• directed outward
• tension
• directed toward the center of the arena
• 9.8 N

What relationship exists between the radius of a circle and the centripetal acceleration?

• direct
• inverse
• exponential
• inverse squared

Which of the following increase the centripetal force?

• Increasing the radius
• Increasing the velocity
• Decreasing the mass
• Decreasing the acceleration

A car with mass m travels around a curve with velocity v. What do you know about the centripetal force if the velocity triples?

• Nothing 
• The centripetal force triples
• the centripetal force multiplies by 9
• The centripetal force divides by 3

Calculate the amount of centripetal force it takes for a softball pitcher to rotate a ball with a velocity of 3 m/s if the ball weighs .12 kg and her arm is .65 meters long.

• .38
• 1.23
• .55
• 1.66 N

When an object is in circular motion it is constantly changing its velocity.

• True
• False

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 ground

The centripetal force of satellites is similar to gravitational force because they are both a net force towards the center of earth.

• True
• False