Force and Motion Unit Test
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Question
Two postal delivery workers have different routes. They both travel from the post office, to neighborhoods to deliver mail, and then back to the post office. Which statement must be true about the two postal delivery workers?(1 point)
Responses
They each travel a distance of 0 miles.
They each travel a distance of 0 miles.
They have the same velocity.
They have the same velocity.
They each have a displacement of 0 miles.
They each have a displacement of 0 miles.
They travel the same distance.
They travel the same distance.
Matt is walking at 1.25 miles per hour to the east. Jaime is walking at 1.25 miles per hour to the south. Which statement describes the movement of Matt and Jaime?(1 point)
Responses
They have different speeds but the same velocity.
They have different speeds but the same velocity.
They have the same speed but different velocities.
They have the same speed but different velocities.
They have the same speed and the same velocity.
They have the same speed and the same velocity.
They have different speeds and different velocities.
They have different speeds but the same velocity.
Force and Motion Unit Test
3 of 153 of 15 Items
Question
Use the graph showing the motion of a person over time to answer the question.
The vertical axis is labeled, position from home (km), and ranges from a 0 km to 14 km. The horizontal axis is labeled, time (minutes) and labeled from 0 minutes to 50 minutes. The graph shows a line that starts from the origin and slopes upward to 12 km at 10 minutes. The line remains at 12 km from 10 minutes to 30 minutes. The line slopes downward from 12 km to 0 km from 30 minutes to 45 minutes.
Which statement correctly compares his motion during the first 10 minutes to his motion during the last 10 minutes?
(1 point)
Responses
His acceleration increases during the first 10 minutes and decreases during the last 10 minutes.
His acceleration increases during the first 10 minutes and decreases during the last 10 minutes.
He is going slower and in a different direction during the first 10 minutes than in the last 10 minutes.
He is going slower and in a different direction during the first 10 minutes than in the last 10 minutes.
He is going faster and in a different direction during the first 10 minutes than in the last 10 minutes.
He is going faster and in a different direction during the first 10 minutes than in the last 10 minutes.
He is speeding up during the first 10 minutes and slowing down during the last 10 minutes.
He is speeding up during the first 10 minutes and slowing down during the last 10 minutes.
What does a horizontal line on a position-time graph indicate about the object?(1 point)
Responses
The object has a constant, nonzero velocity.
The object has a constant, nonzero velocity.
The object is accelerating.
The object is accelerating.
The object remains still.
The object remains still.
The object has a position of zero.
The object remains still.
A force acts on an object. Which option describes an action that could prevent the object from moving?(1 point)
Responses
a force applied in the same direction with a greater magnitude at the same time
a force applied in the same direction with a greater magnitude at the same time
a force applied in the opposite direction with a greater magnitude at the same time
a force applied in the opposite direction with a greater magnitude at the same time
a force applied in the opposite direction with the same magnitude at the same time
a force applied in the opposite direction with the same magnitude at the same time
a force applied in the same direction with the same magnitude at the same time
A force applied in the opposite direction with the same magnitude at the same time.
Which option is the force with the greatest magnitude?(1 point)
Responses
the force needed to lift a textbook
the force needed to lift a textbook
the force needed to lift a pencil
the force needed to lift a pencil
the force needed to lift a chair
the force needed to lift a chair
the force needed to lift a hairbrush