Assertion reason motion chapter

Use the graph to help you answer the question. According to the graph, how does the motion of the car compare to the motion of the truck?

• The car is showing a greater rate of positive acceleration than the truck.

• The truck is showing a greater rate of positive acceleration than the car.

• The truck is showing a greater rate of negative acceleration than the car.

• The car is showing a greater rate of negative acceleration than the truck.

Based on the graph, what can you say about the truck’s motion at 4 seconds?

• The truck is traveling downhill.

• The truck’s average speed is 20 m/s.

• The truck has an instantaneous speed of 20 m/s.

• The truck’s speed is the same as it is throughout because the line has the same slope.

Which of the following position vs. time graphs shows an object that is moving with a constant positive velocity?

• A

• B

• C

• D

A ball rolls down a ramp with a constant acceleration. What would the corresponding position vs. time and velocity vs. time graphs be for the motion of the ball down the ramp?

• A

• B

• C

• D

Which of the following position vs. time graphs shows an object increasing its speed?

• A

• B

• C

• D

What is occurring on this graph?

• slowing down in the positive direction

• moving at a constant speed in the positive direction

• positive change in momentum

• positive net force

Which runner had a head start?

• A
• B
• C

This is a velocity-time graph.  What is the object doing in segment B?

• Positive acceleration
• Negative acceleration
• Constant Velocity
• Not moving

How long did it take this object to travel 10 m?

• 0 s
• 10 s
• 15 s
• 20 s

How far is the person from the starting point after 3 seconds?

• 0 m
• 2 m 
• 3 m
• 6 m