REVIEW CIRCULAR MOTION

The diagram shows an object traveling at a constant speed in a circular path. Which labeled arrow represents the centripetal force acting on the object?

• W

• Z

• X

• Y

Tags

NGSS.HS-PS2-1

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

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which represents the acceleration of the ball?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

Which of the following vectors depicts the tangential speed of the blowing ball?

• A
• B
• C
• D

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

The tangential velocity does what as you get farther from the center of a circle

• Stay the same

• Increase

• Decrease

• Depends on the mass of the object

A Ferris wheel has a radius of 50 meters and takes approximately 800 seconds to make a full circle. Determine the tangential speed of riders (in m/s)

• .39 m/s

• 314 m/s

• 40,000 m/s

As tangential speed increases, rotational speed (assume no other factors change)

• increases

• decreases

• stays the same

A car traveling at a constant 45 mph going around a curve is accelerating because

• it is getting faster

• it is getting slower

• it is changing directions

• it is not accelerating if it has a constant speed

Tags

NGSS.HS-PS2-1