Unit 01 Motion in a Line Practice - Velocity and Motion Graphs

A moving object's velocity vs. time graph is shown, This object is moving backward during the parts marked ---.

• just B to C

• B to C and D to E

• just D to E

• A to B

• none of these answers

Answer explanation

"Moving backward" on a velocity vs. time graph means that the velocity has a value that is negative.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Two of the following graphs show an object that is speeding up. Which ones are they?

• 
• 
• 
• 
• 

Answer explanation

For a position vs. time graph, how steep the graph is shows how fast the object is moving. Whether the graph climbs or falls only shows if the object is moving forward or backward, not anything about how fast it is moving.

Tags

NGSS.MS-PS3-1

A moving object's velocity vs. time graph is shown, This object is sitting still during the parts marked ---.

• just B to C

• B to C and D to E

• just D to E

• A to B

• none of these answers

Answer explanation

"Sitting still" means the velocity stays at zero. From B to C the velocity is staying at a specific number, but not zero.

Tags

NGSS.MS-PS3-1

A cyclist goes from 0 m to 8 m, then turns around and goes to 6 m, all in 10 s. 6 m represents the cyclist's ---.

• distance

• displacement

• average speed

• average velocity

An object is moving and the motion is shown in the position vs. time graph. Which of these describes the object's motion?

• Moving forward at a steady velocity for a while, then moving forward at a different steady velocity

• Moving forward at a steady velocity for a while, then moving forward and accelerating forward

• Sitting still for a while, then moving forward at a steady velocity.

• Sitting still for a while, then moving forward and accelerating forward

• None of these

Answer explanation

Staying on the same value of position means not moving at all. The graph getting steeper indicates that the object is getting faster.

Tags

NGSS.MS-PS2-2

Which graph goes with an object with constant positive acceleration?

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

One of these graphs of position vs. time shows an object moving forward at a constant velocity, Which one is it?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

The velocity vs. time graph shows the motion of an object. During which segments is the object moving backwards?

• M and P

• M and S

• N and S

• P and R and S

• none of these

Tags

NGSS.MS-PS3-1

An object moves and the position vs. time graph is shown. What is the average speed of this object from 0 s to 10 s?

• 4 m/s

• 0.4 m/s

• 1.2 m/s

• 12 m/s

• -1 m/s

Tags

NGSS.MS-PS3-1

A rocket, initially at rest, accelerates at 18 m/s² until it reaches a velocity of 745 m/s. How long does it take the rocket to reach this velocity?

• 41 s

• 0.024 s

• 13410 s

• 18 s

Tags

NGSS.HS-PS2-1