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Science (8th) > Unit 7- Newton's Laws > Flashcards

Unit 7- Newton's Laws Flashcards

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1
Q

First law is also know as:

A

The law of Inertia

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2
Q

When will an object stop moving in the same direction??

A

When an unbalanced object acts on it

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3
Q

What is inertia??

A

The tendency of all objects to resist any change in motion

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4
Q

What property determines how much interia an object has??

A

Mass

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5
Q

What object has more interia??

Hammer or tennis ball??

A

Hammer

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6
Q

Newton’s 2nd law:

A

When an unbalanced force is applied to a mass it causes it to accelerate

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7
Q

The greater the force the __________ the acceleration

A

Greater

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8
Q

The lesser the force the________ the acceleration

A

Lesser

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9
Q

If the same force is applied to a large mass it’ll have _________ acceleration

A

Less

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10
Q

If the same force is applied to an object with a small mass it’ll have ___________ acceleration q

A

More

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11
Q

What does F=MA stand for??

A

F= force m=mass a=acceleration

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12
Q

What r the units used for force??

A

Newtons

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13
Q

Measurement for mass

A

Weight in grams

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14
Q

Measurement for acceleration

A

Speed m/s

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15
Q

The third law of motion:

A

Every time there is an action force, there is a re-action force that is equal in size and acts in an opposite direction

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16
Q

The third law is also known as :

A

The law of conservation of momentum

17
Q

Newton’s third law states the forces must occur in_______\

A

Pairs

18
Q

What’s the reaction force??

Your butt pushing on ur desk seat

A

Chair pushes up

19
Q

What law is this??

Photo of one sitting then being slammed forward in a car

A

1st law

20
Q

What does the picture represent

Tug of war

A

2nd law

21
Q

What does this represent?

Cannonball shooting out, exhaust filling in back of cannon

A

3rd law

22
Q

First law:

A

An object that is not moving, or is at rest will stayed at rest and an object will keep moving with a constant speed and in the same direction

Science (8th) (8 decks)

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