Quiz: Motion in One and Two Dimensions

Which of these quantities has both magnitude and direction?

• energy

• scalar

• unit

• vector

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NGSS.HS-PS2-4

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Scarlett is analyzing a position-time graph of a moving train. Which quantity can be found by measuring the slope of a line that is tangent to a point on the graph?

• acceleration

• displacement

• Averager velocity

• Instantaneous velocity

A car’s velocity is positive and its acceleration is negative. Which of these statements describes the car’s motion?

• The car is speeding up.

• The car is slowing down.

• The car is remaining at rest.

• The car is traveling at constant speed.

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NGSS.HS-PS2-1

Which of these is an example of projectile motion?

• a jet lifting off a runway

• a piece of fruit falling off a tree

• a baseball that has just been thrown

• a roller coaster going down a steep track

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Which of these describes the motion of a ball as it drops onto a vertical spring?

• The acceleration of the ball decreases as the spring shrinks.

• The acceleration of the ball decreases as the spring extends.

• The velocity of the ball changes from positive to negative as the spring shrinks.

• The velocity of the ball changes from negative to positive as the spring extends.

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NGSS.HS-PS2-1