Newton's First Law Practice

A force can do which of the following? (select all that apply)

• a. Choke Luke Skywalker from a distance

• b. Make objects change direction

• c. Make objects accelerate

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NGSS.MS-PS2-2

Match the force with the description

• Air Resistance

• usually from a string or a rope, something hanging

• Friction

• between two surfaces, caused by micro imperfections

• Gravity

• it's what makes free-fall happen

• Tension

• slows down falling objects

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NGSS.MS-PS2-4

A ball is dropped as seen in the image. Where will it stop rolling?

• A

• B

• C

• D

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NGSS.MS-PS2-4

Inertia is...

• The ability of an object to change direction
• The speed of an object
• The resistance of an object to any change in its motion
• The force required to move an object

What is mass?

• Mass is a measure of the amount of material (matter) in an object.

• Mass is a measure of the weight of an object.
• Mass is a measure of the volume of an object.
• Mass is a measure of the temperature of an object.

What is Newton's First Law?

• An object at rest will eventually start moving on its own
• An object in motion will eventually come to a stop on its own
• An object's velocity will increase indefinitely unless acted upon by an external force
• An object at rest will remain at rest, and an object in motion will remain in motion with a constant velocity, unless acted upon by an external force.

The Earth rotates at an approximate velocity of 463 m/s. Then, it suddenly stops moving! Fill in the blanks below:

If the Earth suddenly stopped rotating, everything on Earth would ​ (a)   . This would mean that buildings would ​ (b)   and human beings would ​ (c)   at a velocity of ​ (d)   .

• keep moving
• stop rotating
• fall down
• be fine
• fly into everything
• stay as they are
• 463 m/s
• 0 m/s

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A passenger riding in a car struck from the rear often experiences whiplash. Why does the head of the victim seem to be thrown backwards? Why will head rests help prevent whiplash?

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of these is a real-world example of Newton's First Law?

• A ball rolling down a hill and eventually coming to a stop.
• A car accelerating when the driver presses the gas pedal.
• A person pushing a heavy object and it eventually coming to a halt.
• A car continuing to move forward after the driver takes their foot off the gas pedal.

For each action below, decide if a net force is required or not.

Groups:

(a) a Net Force is required

,

(b) a Net Force is NOT required

• a ball rolling at a constant 5 m/s

• start riding a skateboard

• stop a car cruising at 25 m/s

• stay in your seat

Tags

NGSS.MS-PS2-2