Acceleration

Which of the following is a unit for acceleration?

• km/s
• m/s²
• mi/hr
• ft

Tags

NGSS.HS-PS2-1

When a car goes around a corner at 20 mph, why do we say it  accelerates?

• The car is accelerating because of the velocity is constant
• The car accelerates because it's going 20 mph
• Cars always accelerate when they are in motion
• The car is accelerating because it's changing direction

Tags

NGSS.HS-PS2-1

A value that only has magnitude (a number)

• Scalar
• Vector
• Speed
• Velocity

Of the following, which is a vector?

• Mass
• Time
• Speed
• Velocity

Acceleration is defined as the CHANGE in 

• time it takes for one place to move to another place. 
• velocity of an object.
• distance divided by the time interval 
• velocity divided by the time interval 

Acceleration only takes place when things speed up. 

• True
• False

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

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.HS-PS2-1

Acceleration can be classified as _______________

• Speeding up
• Slowing Down
• Changing directions
• All of the above

Tags

NGSS.HS-PS2-1

In which of the following situations would a car be slowing down while traveling backwards?

• 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