Mechanics is the study of ______.

• matter

• motion

• machines

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

NGSS.MS-PS3-1

True or False:

A theory has been proven true, whereas a law has not yet been proven.

• True

• False

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NGSS.MS-PS2-4

Newton's first law of motion is the Law of Inertia. It states that 'An object at rest stays at rest, unless acted on by another force.'

Which of the following would also be true?

• An object at rest will get bored and want to move.

• An object in motion will get tired and rest.

• An object in motion stays in motion, unless acted on by another force.

Newton's law of inertia also states that an object in motion...

(think of the space launch that ran out of fuel)

• takes the path of most resistance.

• resists a chance in direction.

• goes in random directions, unless acted upon by another force.

Which of the following is true?

• The mass of an object has no effect on it's resist to change.

• The greater the mass, the more it will resist change.

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NGSS.MS-PS2-2

Newton's 2nd law of motion states the higher the mass of an object, the more it resists ______.

• acceleration

• force

• change

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NGSS.MS-PS2-2

What is the mathematical equation that represents Newton's 2nd law of Motion?

Which of the following correctly defines acceleration?

• How fast an object is going.

• The rate an object is going.

• The rate an object changes speed/direction.

• The direction an object is going.

Newton's third Law of Motion states which of the following?

(Remember the balloon.)

• A bigger object has more force then a smaller object.

• An object at rest/in motion stays at rest/in motion unless acted upon by another force.

• For every action, there is an equal and opposite reaction.

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NGSS.MS-PS2-1

An example of Newton's third Law of Motion would be...

• when you push a wall, the wall doesn't push back. This would be an example of Newton's third law.

• when two objects collide, only the larger object experiences a force. This would be an example of Newton's third law.

• when you swim, you push the water backward with your arms and legs, the water pushing your forwards is newton's third law of motion.

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NGSS.MS-PS2-1