Motion Graphing

During which segment did the car travel the fastest?

Answer explanation

Segment A-B shows an acceleration.

Segment B-C shows a complete stop.

Segment C-D shows a change in velocity where the object returned to the start.

Segment D-E shows an acceleration greater than segment A-B because it is a steeper slope.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Using the image, which answer choice best describes the movement of the object between the times of 10 and 20 seconds on the graph

• The object was moving at a constant speed.

• The object was accelerating at a constant rate.

• The object was moving toward the north.

• The object had stopped moving.

Tags

NGSS.MS-PS3-1

Drag and drop the average speed of the object to the correct time interval.

Groups:

(a) Time (s) 0-20

,

(b) Time (s) 20-40

,

(c) Time (s) 40-60

• 5.0 m/s

• 2.5 m/s

• 7.5 m/s

Tags

NGSS.MS-PS3-1

In your own words, create a story to explain the motion of the graph presented here.

Answer explanation

In the first segment, the object was accelerating at a constant speed for a given amount of time. In the second segment, the object came to a stop for a given amount of time. In the third segment, the object returned back to the starting position at a constant speed. In the fourth and last segment, the object accelerated.

Tags

NGSS.MS-PS3-1

Using the graph, match the runner to the correct scenario.

• John

• Accelerated the fastest at the start of the race.

• Darius

• Ran at a constant speed

• Carlos

• Had a difficult or slow start to the race.

Tags

NGSS.MS-PS3-1

John and Carlos had an average speed of 8m/s. Darius had an average speed of 10m/s.

Did the runner or runners with the fastest average speed win the race?

Support your answer using evidence and scientific reasoning.

Tags

NGSS.MS-PS3-1