Motion Graphs, practice 2024

Speed, Velocity, & Acceleration

Multiple Choice

A bus is traveling 25 mph and veers slightly right to exit. What is true of the car's motion?

• The car's speed changes but not its acceleration.

• The car's acceleration changes but not it's velocity.

• The car's velocity changes but not its speed.

• The car's speed changes but not its velocity.

Multiple Choice

Which of the following examples show two objects with the same velocity?

• two identical bikers traveling at different speeds in the same direction

• a bus and a car traveling at the same speed in the same direction

• two identical cars traveling at the same speed in different directions

• a motorcycle and a car traveling at the same speed in opposite directions

Multiple Choice

Velocity does not only tell us the SPEED of an object. It also tells us the _________ of the object.

• size

• direction

• shape

• color

Multiple Select

Which of the following situations is an example of an object changing velocity?

• traveling in a circle at a constant speed

• traveling at a constant speed and then turning left

• traveling at a constant speed in a straight line

-Velocity is the speed of an object plus the direction.

-Velocity changes if:
- the speed changes OR
- if the direction changes OR
- if BOTH speed and direction change.

If an object is traveling in a circle, it is changing directions as it goes around, so velocity is changing.

** If an object makes a turn the direction is changing, so the velocity changes.

​Explanation:

The only time velocity is constant (not changing) is when an object is

traveling at a constant speed AND in a straight line.

​Explanation:

​Example:
If this runner continues at 10m/s and in a straight line, then his velocity DOES NOT change.

If he's on our HBMS track, then when he reaches the curved part, his velocity will change because his direction changes.

​Take time to actually READ the information and OBSERVE/ANALYZE the line graphs that follow.

Distance-Time Graphs

SCI8_Stewart

Multiple Select

Describe the object's motion from E to F (TWO Answers):

• Speeding Up

• Returning to start

• Constant Speed

• Not Moving

Multiple Choice

Describe the object's motion from D to E:

• Speeding Up

• Slowing Down

• Constant Speed

• Not Moving

Multiple Choice

Describe the object's motion from C to D:

• Speeding Up

• Slowing Down

• Constant Speed

• Not Moving

Multiple Choice

What does this graph represent?

• Constant Speed
• Acceleration
• Not moving

Multiple Choice

This graph represents two moving objects. Which statement is true of the objects?

• Both are moving at the same speed,

• Both are moving at a constant speed but the dashed line represents the faster object.

• Both are moving at a constant speed, but the solid line represents the faster object.

Multiple Choice

Match the description to the graph:

"The car is stopped."

Multiple Choice

Which graph shows a car traveling at a constant speed?

• None of these graphs

Multiple Choice

The graph shows Ashley riding her bike to Maria's house. 
What was occurring from point B to point C?

• She was increasing her speed.
• She stopped for 4 minutes
• She was decreasing in speed

Multiple Choice

Which sentence best describes the runner whose distance-time graph is shown?

• The runner ran forward for 2 seconds, and then ran backward for 2 more seconds.

• The runner ran forward for 2 seconds, and then stood still for 2 more seconds.

• The runner ran forward for 2 seconds, and then ran forward more slowly for 2 more seconds.

• The runner ran forward for 2 seconds, and then turned right and continued forward at the same speed for 2 more seconds.

Multiple Select

Which runners have variable speeds the entire time?

• Kramer

• Sally

• Farrah

• Kem

Multiple Choice

Which runner was traveling at the fastest speed at 4 seconds into the race?

• Kramer

• Sally

• Farrah

• Kem

​Variable speed means the speed changes. (Opposite of constant)

​If an object is accelerating or decelerating, then the speed is not constant it is variabl

Multiple Choice

Which runner was traveling at the fastest speed at 12 seconds into the race?

• Kramer

• Sally

• Farrah

• Kem

Acceleration is the rate of change in velocity of an object.

(How fast velocity changes)

​

Acceleration

Multiple Choice

If you are walking down the street at a constant speed in a straight line, what is your acceleration? Explain.

• Your acceleration would depend on the speed you are going.

• It would be 0m/s² because your velocity doesn't change.

• It would be 0m/s² because your velocity changes.

Multiple Choice

If an object has ACCELERATION, it can be "positive" if it is speeding up, but it can also have "negative" acceleration if the object is _______.

• not moving

• slowing down

Speed-Time Graphs

​Time Speed

​**Also known as Velocity-Time Graphs

Multiple Choice

Match the graph to the description:

"The car is stopped."

Multiple Choice

Match the graph to the description:

"The car is traveling at a constant speed."

Multiple Choice

Match the graph to the description:

"The car is accelerating speeding up (positive acceleration)."

Multiple Choice

Match the graph to the description:

"The car is slowing down (negative acceleration)."

Multiple Choice

Segment O-A: The bus is _________________. It's speed changes from 0m/s to 10 m/s in 5 seconds.

• accelerating

• decelerating

• constant speed

• at rest

Multiple Choice

Segment A-B: The bus is moving at a _________________ of 10 m/s for 5 seconds.

• accelerating

• decelerating

• constant speed

• at rest

Multiple Choice

Segment B-C: The bus is _________________. It is slowing down from 10 m/s rest in 3 seconds.

• accelerating

• decelerating

• constant speed

• at rest

Multiple Choice

Segment C-D: The bus is _________________. It has stopped.

• accelerating

• decelerating

• constant speed

• at rest

Multiple Choice

Segment D-E: The bus is _________________. It is gradually increasing it's speed.

• accelerating

• decelerating

• constant speed

• at rest

Multiple Choice

Segment E-F: The bus is moving at a _________________ of 5 m/s for 4 seconds.

• accelerating

• decelerating

• constant speed

• at rest

Multiple Choice

Which graph represents a car decreasing in speed?

Multiple Choice

Which graph represents a car that is not moving?

Multiple Choice

Which graph represents a car that's moving at a constant speed?

Multiple Choice

Which graph represents a car with positive acceleration?

This is the last slide.

Please ask if there is something that you want me to review.