Speed, Velocity, and Acceleration Test Review #1

What is the difference between speed and velocity?

• Speed includes an object's direction, and velocity does not.

• Velocity includes an object's direction, and speed does not.

• Speed is always greater than zero, but velocity can be greater or less than zero.

• Velocity is always greater than zero, but speed can be greater or less than zero.

Kaila runs competitively. She would like to calculate her average running speed each time she runs. Which data should Kaila record in order to calculate her average running speed?

• her final speed and total time

• her initial speed and total distance

• her total distance and total time

• her initial speed and final speed

Which of the following is an example of a vector quantity?

• Time because it only moves in one direction

• Velocity because it includes both magnitude and direction

• Distance because it only includes a straight-line path.

• Speed because it includes both distance and time

A skateboard slows from 14.0 m/s to 2.0 m/s in 6.0 s. What is its acceleration?

• -0.5 m/s^2

• -2.0 m/s^2

• 2.0 m/s^2

• 0.5 m/s^2

A runner completes a 200 m dash in 19.3 s. What is the average speed?

• 10.0 m/s

• 1.0 m/s

• 5.2 m/s

• 10.4 m/s

Tags

NGSS.MS-PS3-1

During the last 5.0 s of a race, a horse’s speed increases from 65 m/s to 73 m/s. What is the acceleration during this time?

• 0.8 m/s^2

• 1.6 m/s^2

• -1.6 m/s^2

• 8.0 m/s^2

Tags

NGSS.HS-PS2-1

How much time is required for an object moving 4.5 m/s to travel 65 m?

• 13 seconds

• 14 seconds

• 15 seconds

• 16 seconds

How far will an object travel if it has a constant velocity of 25 m/s and travels for 6.0 seconds?

• 4.2 m

• 1,500 m

• 15 m

• 150 m

Tags

NGSS.MS-PS3-1

A car decelerates from 36 meters per second to 12 meters per second. The constant rate of deceleration is 12 meters per second per second. How long did it take for the car to decelerate?

• 2.0 s

• 12.0 s

• 48.0 s

• 288.0 s

Tags

NGSS.MS-PS2-2

Which car has zero acceleration?

• R shows constant speed horizontally

• S shows increasing speed gradually

• Q shows decreasing speed linearly

• T shows increasing speed steeply