Force and Motion Review (Gravity, Friction, Motion) 2

Use the diagram to answer the question.

What will happen to the force of gravitational attraction between the objects shown if one of the two objects were moved to a distance of 2.5 m apart?

• It will increase.

• It will decrease.

• It will stay the same.

• It will repel.

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Examine the diagram showing a box sliding down an inclined plane.

Which arrow represents the force of friction acting on the box?

• W

• X

• Y

• Z

Shown in this diagram are the surfaces of two rubber-like materials as seen through a magnifying lens.

Which material should be used for the design of a pad that will fit on the bottom of a cup to keep it from sliding around on a table?

• Use X because it will increase friction the most.

• Use X because it will decrease friction the most.

• Use Y because it will increase friction the most.

• Use Y because it will decrease friction the most.

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Alexei is moving boxes in his house from one room to another. He finds it is easier to push the boxes across a wood floor than a carpeted floor.

Which factor best explains why it is easier to push the boxes along the wood floor?

• The wood floor has less friction.

• The wood floor has more gravity.

• The carpeted floor has less friction.

• The carpeted floor has more gravity.

Study the distance-time graph in the diagram.

According to the graph, where does the object have the greatest speed?

• 1

• 2

• 3

• 4

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The graph shows the motion of a car during the four segments (P, Q, R, and S) of its 120-minute journey.

What can be concluded about the motion of the car from the graph?

• The car moves faster in segment Q than in segment S.

• The car moves faster in segment R than in segment P.

• The car moves faster in segment Q than in segment P.

• The car moves faster in segment S than in segment R.

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The graph shows the progress of a family’s vacation to the beach from their house.

Using the graph, which statement describes the car’s motion during hours 2 and 3?

• The car was traveling at 50 mph on the highway.

• The car was stopped at 0 mph while the family ate lunch.

• The car was accelerating at a constant rate of 3 mi/hr2.

• The car was put in reverse at a rate of 5 mi/hr.

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What is the average speed of a sprinter that runs the 60 meter race in 6 seconds?

• 0.1 m/s

• 10.0 m/s

• 36.0 m/s

• 360.0 m/s

The average speed of a car during 5 hours of travel is 50 miles per hour. What is the total distance the car travelled?

• 0.1 miles

• 10 miles

• 250 miles

• 500 miles

What is this graph showing?

• The object is moving at a constant speed.

• The object is accelerating.

• The object is decelerating.

• The object is moving back toward the start.

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