Midterm Review 2

An astronaut standing on a platform on the Moon drops a hammer. If the hammer falls 6 meters vertically in 2.7 seconds, what is its acceleration?

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NGSS.HS-PS2-1

A car traveling on a straight road at 20 meters per second accelerates uniformly to a speed of 30 meters per second in 15 seconds. The total distance traveled by the car in this 15-second interval is [Do not include units in your answer.]

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NGSS.HS-PS2-1

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NGSS.HS-PS2-1

The uniform motion of a cart is shown in the distance versus time graph. What is the average speed of the cart?

• 0.5 m/sec

• 2 m/sec

• 5 m/sec

• 50 m/sec

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NGSS.MS-PS3-1

The graph below represents the relationship between speed and time for an object moving along a straight line. What is the total distance traveled by the object during the first 4 seconds?

• 5 m

• 20 m

• 40 m

• 80 m

Answer explanation

Displacement is the area under the line.

Which pair of graphs represent the same motion?

• 
• 
• 
• 

Which situation represents a person in equilibrium?

• a child gaining speed while sliding down a slide

• a woman accelerating upward in an elevator

• a man standing still on a bathroom scale

• a teenager driving around a corner in his car

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NGSS.HS-PS2-1

The diagram below shows two dogs pulling on a rope with constant but unequal forces. In which compass direction will both dogs likely move?

• east

• west

• north

• south

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NGSS.HS-PS2-1

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NGSS.HS-PS2-1

The cartoon below shows a humorous view of a law of motion. Which statement best summarizes the scientific concept show in the cartoon?

• A falling body accelerates at a constant speed.

• The motion of an object is constantly changing due to magnetic forces.

• The force of friction causes an object in motion to move faster.

• A body in motion will remain in motion unless influenced by an outside force.