Circular Motion Prep

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⋅r²

• C = π⋅2D

Acceleration only takes place when things speed up. 

• True
• False

Tags

NGSS.HS-PS2-1

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 (check all that apply)

• Speeding up

• Slowing down

• Changing direction

• change in velocity/time

• change in position/time

Tags

NGSS.HS-PS2-1

What is speed?

• how far you go
• how much distance is covered over a period of time
• how fast you accelerate
• the change in the location of a object

Acceleration is a change in ________. 

• direction 
• speed 
• velocity 
• distance 

Tags

NGSS.HS-PS2-1

As you walk at a constant pace, you make a right turn. are you accelerating?

• Yes, because I'm changing the direction in which I'm going

• No, because I'm going at the same speed

The correct equation to calculate speed is

• distance/time
• time/distance
• distance x time
• distance/time²

What the difference between speed and velocity?

• Speed is only how fast, velocity also includes the direction in which you're going

• None, they're the same

• Velocity is only how fast, speed also includes the direction in which you're going