Newton's Law and Circular Motion

What happens to an object's speed as the radius decreases?

• It increases.
• It decreases.
• It remains unchanged.

The time taken for one complete circuit is called the... 

• Period
• Frequency 
• Angular velocity

Frequency describes...

• The number of circuits or cycles per second. 
• The total number of circuits or cycles. 

Centripetal force, created by swinging something in a circle, acts in a direction--

• along the path of motion

• away from the center of the circle

• toward the center of the circle

• tangent to the circle

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

A curved groove is place on the top of a level table as shown in the diagram. A ball is pushed in the groove at P so that it leaves at Q. Which picture shows how the ball will move when it leaves the groove at Q?

• 
• 
• 
• 

Tags

NGSS.MS-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.MS-PS2-1

NGSS.MS-PS2-2

Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s².

• 2.4 m/s
• 3.6 m/s
• 3.9 m/s
• 4.2 m/s