Calculating Speed, Velocity, and Acceleration

1. Which of the following statements about speed and velocity is correct?

• Velocity only describes an object’s rate of motion.

• Speed describes how an object is changing its velocity.

• Speed and velocity both describe how an object is speeding up.

• Only velocity includes the direction an object is traveling.

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NGSS.MS-PS3-1

Acceleration describes how an object’s velocity is changing. Which of the following scenarios provides the best example of an accelerating object?

• A car driving at a constant speed

• A book sitting on top of a high shelf

• A toy train traveling in a circle

• A toy boat floating in a bathtub

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

The gees fly 23 mph to the south when they migrate for the winter.

• speed

• velocity

• acceleration

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NGSS.MS-PS3-1

The tornado is traveling northwest at 20 mph.

• speed

• velocity

• acceleration

The Olympian swam 200 meters in 20 seconds.

• speed

• velocity

• acceleration

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NGSS.MS-PS3-1

What is velocity?

• the quickness of an object

• the location of an object

• acceleration

• speed in a specific direction

65mi/hr South is an example of...

• Speed

• Velocity

• Acceleration

• Direction

Acceleration of an object happens when things ________

• slow down

• go faster

• change direction (turn)

• All of the above

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NGSS.MS-PS2-2

A truck slowing down to stop at a red light is an example of ____.

• Speed

• Velocity

• Acceleration

• Direction

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NGSS.MS-PS2-2

NGSS.MS-PS3-5