In which of these cases does the car have 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 moving down a ramp

Tags

NGSS.HS-PS2-1

Changes in our speed, direction, or both are called _________.

• gravity
• changes
• acceleration
• deceleration

Tags

NGSS.HS-PS2-1

When are you undergoing an acceleration in a car? 

• speed up
• slow down
• make turns
• All of these

Tags

NGSS.HS-PS2-1

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

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

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A car accelerates from a standstill to 70 m/s in 10 seconds.  What is the acceleration?

• 0.7m/s²
• 7m/s²
• 14m/s²
• none of the above

Tags

NGSS.HS-PS2-1

A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²
• 18 m/s²
• 16 m/s²
• 16 m/s

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The picture of the position vs. time graph shows an object that is...

• accelerating/speeding up
• moving at a constant speed 
• not moving 
• accelerating/slowing down. 

Tags

NGSS.MS-PS3-1

Which graph represents zero acceleration (constant velocity)?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

Which graph represents the greatest acceleration?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

Describe the speed of the object from 5-6 seconds using the speed vs. time graph.

• Speeding up
• Slowing down
• Not moving
• Constant speed

Tags

NGSS.MS-PS3-1