Acceleration & Gravity

Acceleration is defined as the CHANGE in

• time it takes for one place to move to another place.

• velocity of an object.

• distance / time

• velocity / time

The SI unit for acceleration is

• m

• m/s

• m/s²

• s

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

In each of the following cases, determine where the car has no acceleration ?

• A car shortly after a stoplight turns green.
• A car approaching a red light
• A car with the cruise control set at 80 km/h
• A car turning a curve at a constant speed

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

When are you undergoing an acceleration in a car? 

• speed up
• slow down
• make turns
• All of the above 

Tags

NGSS.HS-PS2-1

A negative acceleration means that your object is _____. 

• not accelerating
• not moving
• speeding up 
• slowing down 

A positive acceleration means that your object is _____.

• not accelerating

• not moving

• speeding up

• slowing down

Which motion would describe a positive velocity?

• not accelerating

• not moving

• moving to the right

• moving to the left

Which motion would describe a negative velocity?

• not accelerating

• not moving

• moving to the right

• moving to the left

Which graph shows the object standing still?

• A
• B
• C
• D