Y12 Circular Motion

Which represents the acceleration of the ball?

• A
• B
• C
• D

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

• A
• B
• C
• D

moving or tending to move toward a center...

• centripetal force

• centrifugal force

• Tangent

• Curvature

the process or act of turning or circling around something

• Curvature

• Rotation

• Radius

• Orbit

Where is the net force when the rollercoaster is at the top of the loop?

• Towards the sky
• Towards the Right
• Towards the left
• Towards the ground

What is the direction of the velocity at point B, if the ball is revolving clockwise?

• up
• right
• down
• left

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

• outwards
• towards the center
• tangent
• faster

If the radius of the string is .3 meters long and the stopper makes 5 revolutions per second, what is the speed of the stopper? (Hint: C=2πr)

• 9.4 m/s
• 6.8 m/s
• 11.7 m/s
• 3.5 m/s

Assuming Andromeda rotates at a uniform rate, which stars are moving the fastest?

• Stars closest to center
• Stars furthest from the center
• Stars with the hottest temperature
• Stars with the coldest temperature

A pilot experiences centripetal acceleration of 2g's (2 x 9.8 m/s²) while maneuvering a loop at a speed of 400 m/s. What is the radius of the loop?

• 203 m

• 8163 m

• 80,003 m

• 23 m