Circular Motion

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

Tags

NGSS.HS-PS2-1

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

Centripetal acceleration acts towards the ___________ of the circular motion

• centre
• circumference

A ball is moving at constant speed around the circle. Which letter represents the acceleration of the ball?

• A

• B

• C

• D

• Nonsense. The ball can't be accelerating while moving at a constant speed.

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

A test car moves at a constant speed around a circular track.  If the car is 48.2 m from the track's center and has a centripetal acceleration of 8.05 m/s², what is the car's tangential speed?

• 19.7 m/s
• 5.99 m/s
• 0.17 m/s
• 388.01 m/s

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

• outwards

• towards the center

• tangent

• faster

Bentley the bat has a mass of 0.58 kg and flies at a speed of 0.8 m/s in circle of radius 0.5 m. What is his acceleration?

• 0.25 m/s²

• 1.3 m/s²

• 1.6 m/s²

• 0.74 m/s²

Tags

NGSS.HS-PS2-1

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

• outwards
• towards the center
• tangent
• faster

An object moves with a constant speed of 30 m/s on a circular track of radius 150 m.  What is the magnitude of the acceleration of the object?    
A) zero  
B) 0.17 m/s2  
C) 5.0 m/s2 
D) 6.0 m/s2 

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1