Circular Motion 2 Unit 3 AP Physics

Which of the following is the unit for centripetal force?

• J
• m/s²
• kg⋅m/s
• N

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

• 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 radius triples?

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

Tags

NGSS.HS-PS2-1

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

• True
• False

Tags

NGSS.HS-PS2-1

If centripetal force stopped acting on all satellites they would continue traveling in space in a constant direction and constant speed.

• True
• False

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-2

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

• True
• False

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

A car is rounding a bend as shown in the diagram. Which arrow correctly shows the direction of the cars velocity?

• A

• B

• C

• D

Tags

NGSS.HS-PS2-1

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

Tags

NGSS.HS-PS2-1

Why do sharp turns in roads have reduced speed limits posted?

• The lower the speed the lower centripetal force.

• The lower the speed the higher centripetal force.

• The lower the speed the larger the radius.

• Speed limits aren't reduced on sharp turns.