Circular Motion and Rotational Dynamics

In which direction will centripetal acceleration act upon a rotating object?

• Parallel to the edge of the circle.

• Perpendicular (90 degrees) to the circle.

• Points inward towards the center of the circle.

• Moves outward away from the center of the circle.

Which of the following terms means "center seeking"?

• Centrifugal

• Centenarian

• Centripetal

• Central

A 250 kg motorcycle is driven around a 12 meter tall vertical circular track at a constant speed of 11 m/s. Which of the equations below solve for the net force on the motorcycle while its at the bottom of the track?

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A 250 kg motorcycle is driven around a 12 meter tall vertical circular track at a constant speed of 11 m/s. Which of the equations below solve for the net force on the motorcycle while its at the position shown in the above image?

• 
• 
• 

Tags

NGSS.HS-PS2-1

A 250 kg motorcycle is driven around a 12 meter tall vertical circular track at a constant speed of 11 m/s. Which of the equations below solve for the net force on the motorcycle while its at the position shown in the above image?

• 
• 
• 

Tags

NGSS.HS-PS2-1

Which vector diagram shows the "inertia" of the moving object as it moves in circular motion?

• Diagram #1

• Diagram #2

• Diagram #3

• Diagram #4

Which vector diagram shows the centripetal acceleration of the moving object as it moves in circular motion?

• Diagram #1

• Diagram #2

• Diagram #3

• Diagram #4

Which vector diagram shows the tangential velocity of the moving object as it moves in circular motion?

• Diagram #1

• Diagram #2

• Diagram #3

• Diagram #4

Study the picture.

Car 1 and Car 2 move around a curve that has a radius of 20 m, but at different speeds.

Which statement best compares the cars' centripetal accelerations?

• Car #1's centripetal acceleration is 2-times Car #2's centripetal acceleration.

• Car #2's centripetal acceleration is 2-times Car #1's centripetal acceleration.

• Car #1's centripetal acceleration is 4-times Car #2's centripetal acceleration.

• Car #2's centripetal acceleration is 4-times Car #1's centripetal acceleration.

Study the picture.

Car 1 and Car 2 move at the same speed of 10 m/s. Car 1 turns a curve with a radius of 10 m. Car 2 turns a curve with a radius of 20 m.

Which statement best compares the cars' centripetal accelerations?

• Car #1's centripetal acceleration is 2-times Car #2's centripetal acceleration.

• Car #2's centripetal acceleration is 2-times Car #1's centripetal acceleration.

• Car #1's centripetal acceleration is 4-times Car #2's centripetal acceleration.

• Car #2's centripetal acceleration is 4-times Car #1's centripetal acceleration.

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