S8P3A Vocab: Speed, Distance, Velocity, and Acceleration

What is acceleration?

• Change in speed

• Change in direction

• Change in velocity

• All of the above.

Acceleration is a change in ________ caused by an unbalanced force acting on an object.

• motion

• temperature

• color

• shape

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Which of the following is an example of acceleration?

• A car stopping at a stop sign

• A car moving at a constant speed

• A car turning a corner

• Both A and C

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A frame of reference is a system for specifying the precise location of objects in space and time.

• A system for specifying the precise location of objects in space and time.

• A method to measure temperature.

• A tool for calculating speed.

• A device to observe stars.

In the first scenario, what is the speed of the cars as observed by the observer?

• 20 m/s

• 40 m/s

• 0 m/s

• 60 m/s

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NGSS.MS-PS3-1

In the second scenario, what is the speed of each car as observed by the observer?

• 20 m/s

• 40 m/s

• 0 m/s

• 60 m/s

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NGSS.MS-PS3-1

Fill in the blank: Motion is the change in an object's position with respect to time and in comparison with the position of other objects used as ________ points.

• reference

• starting

• ending

• fixed

What is the definition of speed?

• The rate of change of position with respect to time

• The amount of distance covered in a day

• The time taken to travel a fixed distance

• The rate of change of time with respect to distance

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NGSS.MS-PS3-1

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Velocity is a measurement of:

• speed and direction

• only speed

• only direction

• acceleration

Which of the following scenarios best illustrates uniform motion?

• A cyclist slowing down at a traffic light

• A plane taking off from a runway

• A train moving at a constant speed on a straight track

• A car accelerating on a highway