11/29 CM Quiz

Which of the following terms means "center seeking"?

• centrifugal
• centrifuge
• centripetal
• centenarian

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

• direct
• inverse
• exponential
• inverse squared

Which of the following is the unit for centripetal force?

• J
• m/s²
• kg⋅m/s
• N

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 radius triples?

• 9.8?
• Force triples
• Force divides by 3
• Force divides by 9

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

• True
• False

Why does velocity happen when going in a circle even if you are going the same speed?

• The direction around the circle changes at every point.

• Velocity does not change

• Because direction is the same around the circle

• Neither

If velocity increases force will....

• increase because they have a direct relationship

• increase because they have a inverse relationship

• decrease

• both

A car is rounding a curve as shown in the diagram. Which arrow correctly shows the direction of the centripetal force keeping the car in circular motion?

• A

• B

• C

• D

If car A and car B are both traveling at the same speed, which will require a higher centripetal force?

• Car A

• Car B

• They have the same centripetal force