Acceleration

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

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.MS-PS2-2

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

Which graph shows the object standing still?

• A
• B
• C
• D

When are you undergoing an acceleration in a car? (Can be more than one)

• speed up

• slow down

• make turns

• All of the above

A negative acceleration means that your object is _____. 

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

Of the following, which is a vector?

• Direction

• Time

• Speed

• Acceleration

Acceleration only takes place when things speed up. 

• True
• False

Tags

NGSS.MS-PS2-2

A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?

• -7.5 m/s
• -7.5 m/s²
• -0.5 m/s²
• 7.5 mi//hr

Tags

NGSS.HS-PS2-1

In which of the following situations would a car be speeding up while traveling forward?

• positive velocity and positive acceleration

• positive velocity and negative acceleration

• negative velocity and positive acceleration

• negative velocity and negative acceleration

Tags

NGSS.HS-PS2-1