Circular Motion

Centripetal acceleration always points

• in the direction of the object's motion
• in the opposite direction of the object's motion
• towards the center of the circle
• towards the outside of the circle

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

• outwards
• towards the center
• tangent
• faster

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

The units of tangential (linear) velocity are

• m s^-1
• rad s^-1

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

• A
• B
• C
• D

What does RPM stand for?

• Speed of a straight line
• speed of a circle
• Revolutions Per Minute
• Rotations Per MInute

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

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

What object experiences uniform circular motion?

• A car speeding up as it turns left
• A car traveling around a roundabout at a constant speed
• A car slowing down as it crests a tall hill
• A car traveling down the road at a constant speed

What is the force that causes centripetal acceleration when a car goes around a curve?

• Friction
• Gravity 
• Normal
• Tension

Tags

NGSS.HS-PS2-1