Constant Acceleration

A drag racer accelerated from 0 m/s to 200 m/s in 5 s.  What was the acceleration?

• 0 m/s

• 40 m/s²

• -40 m/s²

• 40 m/s

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

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. 

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 

A roller coaster accelerates from an initial speed of 6.0 m/s to a final speed 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 rate that a car's velocity changes is its

• speed

• force

• gravity

• acceleration

Which of the following statements is NOT true?

• An object with constant velocity travels at the same acceleration.

• An object with constant acceleration has a velocity that is constantly changing each second and therefore it gets faster and faster or slower and slower.

• Constant acceleration is also called uniform acceleration.

• Acceleration due to the Earth's gravity is 9.8 m/s/s.

What do the following symbols represent: Vi and Vf?

• beginning velocity and ending velocity

• velocity in two different directions

• the velocity of two different objects

The SI unit for acceleration is

• mph

• ft/sec²

• m/s²

How could an object traveling at 3.8 m/s/s and then -3.8 m/s/s be interpreted?

• An object is moving forwards and then backwards.

• An object is moving backwards and then forwards.

• An objects velocity increases and then decreases.

• An objects velocity decreases and then increases.

• None are correct.

A car accelerates uniformly from rest to a speed of 20 m/s in 5 seconds. What is the car's acceleration?

• 2 m/s^2

• 4 m/s^2

• 5 m/s^2

• 10 m/s^2

Tags

NGSS.HS-PS2-1