Speed, Acceleration and Centripetal Acceleration

Which represents the acceleration of the ball?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

What happens to the centripetal force exerted on an object if you triple the velocity?

• it increases to 3X
• it decreases to 6X
• it increases to 6X
• it increases to 9X

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

What is the formula for circumference of a circle?

• C = π⋅r

• C = 2⋅π⋅r

• C = π⋅D

• C = π⋅2D

Why does a car accelerate as it round a corner at a constant speed?

• Its direction changes
• It doesn't
• It slows down
• Its speeds up  

Tags

NGSS.HS-PS2-1

Acceleration is a change in ________. 

• direction 
• speed 
• velocity 
• distance 

Tags

NGSS.HS-PS2-1

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

• outwards
• towards the center
• tangent
• faster

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

• Period

• Frequency

• Angular velocity

Tags

NGSS.HS-PS4-1

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

• up
• right
• down
• left

At the instant shown in the diagram, the car's centripetal acceleration is directed-

• toward E

• toward N

• toward W

• clockwise

Tags

NGSS.HS-PS2-1