Circular Motion Review

Which of the following vectors depicts the tangential 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

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 0.12 kg and her arm is 0.65 meters long.

• .38
• 1.23
• .55
• 1.66 N

A car traveling at 15 m/s on a flat surface turns in a circle with a radius of 25 m.  What is the centripetal acceleration of the car?

• 2.4 x 10^-2 m/s²
• 0.60 m/s²
• 9.0 m/s²
• zero

Tags

NGSS.HS-PS2-1

Which of the following terms means "center seeking"?

• centrifugal
• centrifuge
• centripetal
• centenarian

What is the relationship between centripetal force and the mass of an object?

• direct
• inverse
• exponential
• inverse squared

Tags

NGSS.HS-PS2-1

What is the difference between rotation and revolution?

• Rotation is around another object while revolution is around its own axis.
• Rotation is on its own axis while revolution is around another object.
• They are the same
• Rotation is faster

Tags

NGSS.MS-ESS1-1

What is the difference between centripetal and centrifugal forces?

• Centripetal is towards center while centrifugal is away from the center.
• Centrifugal is towards center while centripetal is away from the center.
• Both are correct
• None of the above are correct

This is typically just the momentum of a revolving object, but is mistaken for a force:

• centripetal force
• centripetal acceleration
• centrifugal force
• gravity

Tags

NGSS.HS-PS2-2