REVIEW: Acceleration (v-t graphs)

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

• A car speeds up after a stoplight turns green.

• A car slows down as it approaches a red light

• A car with the cruise control set at 80 km/h going down a straight highway

• A car turning a curve at a constant speed

Tags

NGSS.HS-PS2-1

The standard unit for acceleration is...

• m/s

• km/hr

• m/s²

• mph

Tags

NGSS.HS-PS2-1

A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s in 4 seconds.  What is its acceleration?

• 16 m/s 

• 18 m/s² 

• 16 m/s²

• 24 m/s²

Tags

NGSS.HS-PS2-1

A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.

• 2.2 m/s²

• 7.0 m/s²

• 5.7 m/s²

• 70 m/s²

Tags

NGSS.HS-PS2-1

What kind of acceleration is shown here?

• positive
• negative
• none
• varies

What is the velocity?

• positive
• negative
• decreasing
• increasing

What is the velocity?

• 0 m/s
• positive m/s
• negative m/s
• decreasing

Which section of the graph shows decreasing velocity?

• CD
• DE
• EF
• GH

Which section of the graph shows constant velocity?

• AB
• BC
• EF
• GH

How fast is this object going at 1 second?

• 20 cm/s

• 30 cm/s

• -40 cm/s