Circular Motion Review

A 0.50 kilogram object moves in a horizontal circular path with a radius of 0.25 meter at a constant speed of 4.0 meters per second. What is the magnitude of the object’s acceleration?

• 8 m/s²

• 32 m/s²

• 16 m/s²

• 64 m/s²

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NGSS.HS-PS2-1

A 2 x 10³ kilogram car travels at a constant speed of 12 meters per second around a circular curve of radius 30 meters. What is the magnitude of the centripetal acceleration of the car as it goes around the curve?

• 0.4 m/s²

• 800 m/s²

• 4.8 m/s²

• 9600 m/s²

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NGSS.HS-PS2-1

If the velocity of a car traveling around a circular track doubles, its centripetal acceleration would be

• 1/2 as great

• 1/4 as great

• 2 times greater

• 4 times greater

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An object traveling in uniform circular motion has a centripetal acceleration due to the change in

• Speed

• Kinetic energy

• Direction

• Mass

In the diagram below, a cart travels clockwise at constant speed in a horizontal circle.

At the position shown in the diagram, which arrow indicates the direction of the centripetal acceleration of the cart?

• A

• B

• C

• D

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NGSS.HS-PS2-1

In the diagram below, a cart travels clockwise at constant speed in a horizontal circle.

At the position shown in the diagram, which arrow indicates the direction of the velocity of the cart?

• A

• B

• C

• D

Tags

NGSS.HS-PS2-1

If a car travels at a constant speed in a circle with a constant radius, the centripetal acceleration of the ball is

• Zero

• Constant in direction, but changing in magnitude

• Constant in magnitude, but changing in direction

• Changing in both magnitude and direction

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NGSS.HS-PS2-1

An unbalanced force of 40 Newtons keeps a 5 kilogram object traveling in a circle of radius 2 meters. What is the speed of the object?

• 8 m/s

• 16 m/s

• 2 m/s

• 4 m/s

Tags

NGSS.HS-PS2-1

If a rubber stopper completes 20 revolutions in 10 seconds, what is the period?

• 0.5 s

• 2 s

• 10 s

• 20 s

A car travels at a constant speed in a uniform circle. If the radius of the path is halved while maintaining the same speed, what happens to the centripetal acceleration

• Halved

• Doubled

• Quadrupled

• Remains the same