Forces & Motion Chapter 2 Quiz

If an object falling freely were somehow equipped with an odometer to measure the distance it travels, then the amount of distance it travels each succeeding second would be  _________.

• doubled

• constant

• less and less each second

• greater than the second before

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Disregarding air resistance, objects fall with constant _________

• acceleration

• speed

• velocity

• distances each successive second

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An apple falls from a tree and hits the ground 5 meters below. It hits the ground with a speed of about ________

• 5 m/s

• 20 m/s

• 10 m/s

• 15 m/s

• Not enough information is given to estimate

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If a car increases its velocity from zero to 60 km/h in 10 seconds, its acceleration is _______

• 3 km/h/s

• 10 km/h/s

• 60 km/h/s

• 600 km/h/s

• 6 km/h/s

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While an object near the earth's surface is in free fall , its _______.

• velocity increases

• acceleration increases

• mass increases

• mass decreases

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The two measurements necessary for calculating average speed are _______.

• velocity and distance

• acceleration and time

• velocity and time

• distance and acceleration

• distance and time

In each second of fall, the distance a freely falling object will fall is _______.

• about 5 m

• the same, but not 5 m or 10 m

• about 10 m

• increasing

• none of these

A heavy object and a light object are dropped at the same time from rest in a vacuum. The heavier object reaches the ground _______.

• sooner than the lighter object

• almost immediately

•  later than the lighter object

• at the same time as the lighter object

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A heavy object and a light object are dropped at the same time from rest in a vacuum. The heavier object acceleration will be _____.

• constant

• change by the same amount each second

•  always decrease

• change by varying amounts depending on its speed

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 One half second after starting from rest, a freely-falling object will have a speed of about ______.

• 1.25 m/s.

• 10 m/s

• 5 m/s

• 20 m/s

• none of these

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