5.P.1 Forces and Motion

A wagon is pushed in a straight line. How would an increase in friction on the wagon wheels affect the wagon?

• The wagon moves faster

• The wagon changes mass

• The wagon changes direction

• The wagon slows down

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5.P.1.1

A runner measured the time it took him to run 5 km. What can he calculate from the distance and time measurements?

• direction

• mass

• speed

• force

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5.P.1.2

Which best explains why a bicycle slows down when its brakes are applied?

• brakes heat the rubber on the tires

• brakes add energy to the bicycle

• brakes increase the force of gravity on the bicycle

• brakes cause frictional forces on the wheels

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5.P.1.1

A ball is kicked and rolls along a level field until it comes to a stop. What is most responsible for the ball coming to a stop?

• air

• gravity

• mass

• friction

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5.P.1.1

If a car is moving backward along a road, can its speed be measured?

• Yes, it does not have friction acting on it

• Yes, it travels a distance in a certain amount of time

• No, only if the car is moving forward

• No, the backwards distance cannot be measured

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5.P.1.2

Scientist discover an asteroid that is moving through space. What information is needed to determine the average speed of the asteroid?

• The mass and size

• The distance the asteroid is from Earth

• The direction and distance from Earth

• How far the asteroid has moved in 24 hours.

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5.P.1.2

What causes a wagon to speed up when going down a hill?

• gravity

• friction

• air pressure

• mass

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5.P.1.1

A bowling ball moves across a flat surface at 7 feet per second. If a student is asked to calculate the total distance traveled by the ball, what other information does the student need to know?

• amount of friction

• amount of force applied

• total time the ball rolled

• mass of the ball

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5.P.1.2

What does a flat, horizontal line on a motion graph indicate?

• The object is speeding up

• The object is slowing down

• The object is not moving

• The object is returning home

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5.P.1.3

Two kickballs are made of the same material and are being rolled on the same surface but have different masses. What needs to be altered for them to roll the same distance?

• gravity

• force

• direction

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5,P.1.4