Relative Motion/Motion Diagrams/Motion Graphs

Where is the object speeding up?

• 10-15 min

• 15-30 min

• 30-40 min

• 40-60 min

Answer explanation

Moving away from the x-axis (similar to 0-10 min)

Tags

NGSS.HS-PS2-1

Where is the object moving the fastest?

• 10-15 min

• 15-30 min

• 0-10 min

• 40-55 min

Answer explanation

The object is moving at 60 m/min from 10-15 minutes.

Tags

NGSS.MS-PS3-1

Where does the object have a positive acceleration?

• 10-15 min

• 15-30 min

• 30-40 min

• 40-60 min

Answer explanation

The slope of the line for the velocity vs. time graph is positive, and a positive slope indicates a positive acceleration for that type of graph.

Tags

NGSS.HS-PS2-1

Where is the object at rest?

• 0 min, 30 min, and 55 min

• Only 30 min

• 0 min, 10-15 min, 30 min, and 55 min

• Only 10-15 min

Answer explanation

The object is at rest when it hits the x-axis (v = 0m/s) for a velocity vs. time graph.

Tags

NGSS.MS-PS3-1

Where is the object traveling in a negative direction?

• A-B

• B-C

• F-G

• G-H

Answer explanation

B-C because the line is moving in a -y direction

Where is the object traveling in a positive direction?

• A-B

• B-C

• F-G

• D-E

Answer explanation

F-G because the line is moving in a +y direction

Where is the object moving the fastest?

• F-G

• G-H

• B-C

• D-E

Answer explanation

D-E, steepest slope.

Where is the object at rest?

• F-G

• A-B

• B-C

• D-E

Answer explanation

Horizontal line for a positive vs. time graph represents an object at rest.

If something is traveling at a constant velocity, what is the acceleration?

• Positive

• Negative

• Zero

• Not enough information

Answer explanation

A constant velocity means the velocity does not change. Therefore, if there is not change in velocity, there is no acceleration.

Between which time interval(s) is the object speeding up?

• Only 3-5 seconds

• 5-10 seconds

• 10-14 seconds

• 3-5 seconds and 14-18 seconds

Answer explanation

The object is speeding up on both intervals because the graph ends more vertically than horizontally.

Tags

NGSS.HS-PS2-1