Forces Speed and Moments

How fast an object is moving, regardless of its direction, is

• force

• control group

• speed

• velocity

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NGSS.MS-PS3-1

A duck flies 60 meters in 10 seconds. What is the duck’s speed?

• 600 m/s

• 50 m/s

• 6 m/s

• 70 m/s

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NGSS.MS-PS3-1

A force is described as...

• A push only

• A pull only

• A push or a pull

• None of the above

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NGSS.MS-PS2-1

Which force always pulls downward on objects?

• Support force

• Friction force

• Air resistance

• Gravity

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NGSS.MS-PS2-4

What unit do scientists use to measure force?

• Meters

• Newton

• Meter per second per second

• Grams

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NGSS.MS-PS2-2

NGSS.MS-PS2-5

A change to an objects motion is caused by...

• Velocity

• Acceleration

• Unbalanced forces

• Balanced forces

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NGSS.MS-PS2-2

A beetle crawls 2 cm/minute for ten minutes. How far did it crawl?

• 8 centimeters

• 20 centimeters

• .20 centimeters

• 5 centimeters

When you walk across the ground and push on it with your feet...

• There is no effect on the ground.

• The ground pushes back less strongly than your feet.

• The ground pushes back more strongly than your feet

• The ground pushes back on your feet with equal force.

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NGSS.MS-PS2-1

A bowling ball and a tennis ball are dropped off of the Empire State building. Which object will be affected by air resistance?

• Neither the bowling ball or tennis ball

• Both the bowling ball and tennis ball

• Neither the bowling ball or tennis ball

• Bowling ball

Describe the motion of a person not wearing a seat belt if the car stops suddenly.

• The car will stop and the person will speed up.

• The car will stop and the person will keep moving forward because of inertia.

• The person will stop faster than the car because they are lighter.

• The person and car will stop together.