Position and Motion

Which of the following quantities does not require a direction?

• Velocity

• Displacement

• Acceleration

• Speed

If a runner completes a 400m lap around a track and ends at the starting point, what is the runner's displacement?

• 200m

• 0m

• 400m

• 800m

Which of the following is a scalar quantity?

• Speed

• Acceleration

• Displacement

• Velocity

Displacement is the difference between your

• reference point and reference direction

• total distance traveled

• starting position and your final position

• average speed

Which line on the graph represents the fastest constant speed?

• A

• B

• C

• They are all moving at the same speed.

Tags

NGSS.MS-PS3-1

An object that keeps getting faster away from a reference point on a distance-time graph will appear as a line that

• is straight and moves up and to the right.

• is straight and horizontal.

• curves downward (down and to the right).

• curves upward (up and to the right).

Tags

NGSS.MS-PS3-1

How can you tell if an object is getting closer to a reference point using a distance-time graph?

• You cannot tell if an object is getting closer to a reference point.

• The line approaches the y-axis (distance decreases).

• The line approaches the x-axis (distance decreases).

• The line curves upward.

You ride your bike 10 miles East but then head West for 6 miles. What is your displacement?

• 16 miles East

• 4 miles East

• 4 mile West

• 6 miles West

You are in a car that drives away from Beaver Stadium. How would you describe your motion relative to the stadium? To the car?

• Stadium- Not moving; Car- Moving away

• Stadium- Moving toward; Car- Not moving

• Stadium- Moving away; Car- Moving closer

• Stadium- Moving away; Car- Not moving

Suppose you travel 10 miles East on your bike from your house and then 6 miles West. If the reference direction is East, then what is final position relative to your house?

• +4 miles

• -4 miles

• +16 miles

• -6 miles