Motion Unit

Displacement and velocity are examples of _________ because they have both magnitude and direction.

• vectors

• scalers

• sizes

• amounts

The sum of two or more vectors is called the ____________.

• resultant vector

• diameter

• perimeter

• area

An object is accelerating if its velocity remains constant.

• True

• False

The acceleration of a moving object is calculated by dividing the change in ______ by the time over which the change occurs.

• velocity

• acceleration

• distance

• direction

The direction and length of a straight line from the starting point to the ending point of an object's motion is ________.

• acceleration

• velocity

• distance

• displacement

The SI unit for measuring _________ is the meter.

• time

• mass

• distance

• displacement

A train approaching a crossing changes speed from 30 m/s to 10 m/s in 250 s. How can the train's acceleration be described?

• The train's acceleration is positive.

• The train's acceleration is negative.

• The train is not accelerating.

• The train will come to a rest in 6 minutes.

   
At what point on this distance-time graph is the toy car going the fastest?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

At what point(s) on the graph is the toy car stopped?

• B and D

• A and C

• Just C

• Just D

Tags

NGSS.MS-PS3-1

An object that is accelerating may be

• Slowing down

• Gaining Speed

• Changing Directions

• All of the above

Tags

NGSS.MS-PS3-5