Circular Motion

What object experiences uniform circular motion?

• A car speeding up as it turns left
• A car traveling around a roundabout at a constant speed
• A car slowing down as it crests a tall hill
• A car traveling down the road at a constant speed

Why do objects experience centripetal acceleration?

• Because they are speeding up as they move in a circle
• Because they are constantly changing direction and the net change is directed inward
• Because they are constantly changing both speed and direction
• Because when you have 100 people pedaling, you can speed up more easily.

Tags

NGSS.HS-PS2-1

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

• outwards
• towards the center
• tangent
• faster

Centripetal acceleration always points

• in the direction of the object's motion
• in the opposite direction of the object's motion
• towards the center of the circle
• towards the outside of the circle

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

• direct
• inverse
• exponential
• inverse squared

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

• direct
• inverse
• exponential
• inverse squared

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

Which of the following terms means "center seeking"?

• centrifugal
• centrifuge
• centripetal
• centenarian