Circular Motion

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

• outwards
• towards the center
• tangent
• faster

What happens to an object's speed as the radius decreases, if the centripetal force is to remain constant?

• It increases.

• It decreases.

• It remains unchanged.

A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

As the car goes around the curve, the centripetal force is directed--

• toward the center of the circular curve

• away from the center of the circular curve

• tangent to the curve in the direction of motion

• tangent to the curve opposite the direction of motion

Tags

NGSS.HS-PS2-1

At point P, he car hits an area of ice and loses all frictional force on it tires. Which path does the car follow on the ice?

• A

• B

• C

• D

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

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

• A

• B

• C

• D

Tags

NGSS.HS-PS2-1

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

• A

• B

• C

• D

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

Which represents the acceleration of the ball?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

Which of the following depict the speed of the blowing ball?

• A
• B
• C
• D

Tags

NGSS.MS-PS3-1

The force that is necessary to keep the bucket swinging in a circle is called the:

• tangential velocity
• centrifugal force
• centripetal force
• the force of gravity

Tags

NGSS.HS-PS2-1