acceleration

A roller coasters accelerates from an initial velocity of 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-PS2-2

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.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

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

• 2.2m/s²

• 7.0m/s²

• 5.7m/s²

• 70m/s²

Tags

NGSS.MS-PS2-2

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.MS-PS2-1

NGSS.MS-PS2-2

Which graph represents zero acceleration (constant velocity)?

• A

• B

• C

• D

Which graph represents the greatest acceleration?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-2

Which of the following is a unit for acceleration?

• km/s

• m/s²

• mi/hr

• ft

What happened during C to D point?

• not moving

• increasing speed at a constant rate

• moving at a constant speed

• moving at 0 m/s² acceleration

Tags

CCSS.HSF.IF.B.4