Motion formative RETAKE

The rate at which the velocity of an object changes over time is best described by which term?

• force
• time
• acceleration
• position

A pilot describes a plane as traveling northwest at 50 mi/h. Which attribute of the plane’s motion has the pilot described?

• force
• acceleration
• velocity
• displacement

What does the slope of the graph represent?

• Speed
• Time
• Acceleration
• DIstance

A driver is headed north at 50 km/hr. A box is sitting on the seat next to him. . If you were in the car, you do not see the box moving. What is necessary to see the true speed of the box?

• stationary frame of reference
• . moving frame of reference
• a map
• a digital camera

. Which graph best shows a car with constant negative acceleration?

• 
• 
• 
• 

Displacement…

• must be in a particular direction
• must be in a straight line
• . is the change in position of an object
• all of the above

A car is travelling down a straight road. If the acceleration on the car is zero, what will happen to the velocity of the car

• car will stop
• car’s velocity will increase
• car’s velocity will decrease
• car’s velocity will stay the same

What is the object’s displacement overall?

• 1.1 m
• 0m
• 2.6m
• .9m

What is the instantaneous speed when the person is at the star?

• -0.36m/s
• . -2.8m/s
• 0.36m/s
• 2.8m/s

What is the average velocity of the person over intervals I, II, and III?

• 0.07m/s
• 0.1m/s
• 1.1 m/s
• 0.22 m/s