Describing Motion Graphs

The diagrams below are distance-time graphs for four bodies.

Which body is moving with an increasing speed?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

A girl goes for a ride on her bicycle.

The diagram shows how her speed changes with time for part of her journey.

In which labelled section is she moving with constant speed?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

What does this graph represent?

• Constant speed

• Acceleration

• Not moving

Which graph is would represent a decrease in speed?

• Graph A

• Graph B

• Graph C

• The object is not decreasing in speed in any of these graphs

Tags

NGSS.MS-PS3-1

Looking at this displacement vs time graph, between what two points is the objects velocity the greatest?

• 2s - 3s

• 3s - 4s

• 5s - 6s

• 4s - 5s

Tags

NGSS.MS-PS3-1

The slope of this graph represents...

• Speed

• Constant acceleration

• Velocity

• Time

Tags

NGSS.MS-PS3-1

Looking at the entire graph, what is the displacement of the turtle?

• 3 m

• 25 m

• -3 m

• 0 m

For the first 5 seconds, what is the speed of the turtle?

• 1.8 m/s

• 0.56 m/s

• -1.8 m/s

• 9 m

Answer explanation

The distance of the turtle traveled is 9 meters over the course of 5 seconds. Distance and speed do not have direction and therefore cannot be negative values because negative refers to a direction when describing motion.

Tags

NGSS.MS-PS3-1

Which of the following velocity-time graphs represents an object moving with constant acceleration?

• A) A straight line with a positive slope

• B) A horizontal line

• C) A curve with increasing slope

• D) A straight line with a negative slope

What does the area under a velocity-time graph represent?

• A) Displacement

• B) Speed

• C) Acceleration

• D) Time