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science etst 2/27 Flashcards

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Biology 101 flashcards
1
Q

More force means __________ acceleration.

A

more

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2
Q

momentum

A

the product of an object’s mass and acceleration

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3
Q

the product of an object’s mass and acceleration

A

The amount of force needed to make an object change its velocity depends on the mass of the object and the acceleration required.

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4
Q

What is the mathematical equation that represents Newton’s 2nd law?

A

What is the mathematical equation that represents Newton’s 2nd law?

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5
Q

More mass means __________ acceleration.

A

less

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6
Q

2 factors that determine the level of gravitational force

A

mass and disance

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7
Q

More mass means _________ gravity

A

more

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8
Q

More distance means _________ gravity.

A

less

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9
Q

Which factor has the greatest influence on gravity?

A

distance

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10
Q

free fall

A

motion of an object when gravity is the only force acting on it

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11
Q

What causes terminal velocity?

A

when air resistance is equal to an object’s weight

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12
Q

Newton’s 3rd Law of Motion

A

For every action (or force) there is an equal and opposite reaction(or force).

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13
Q

acceleration

A

the rate of change in velocity

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14
Q

velocity

A

the speed and direction of an object

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15
Q

mass

A

the ammount of matter in an object

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16
Q

terminal

A

the greatest velocity a falling object reaches

17
Q

horizontal

A

velocity parallel to Earth’s surface

18
Q

centripetal

A

the force on an object pulling toward the center of a circular path

19
Q

Two objects with the same velocity are moving in the same _______________.

A

direction

20
Q

What is the SI unit for force?

A

Newton

21
Q

What is the symbol for Newtons?

A

N

22
Q

Who stated the Law of Universal Gravitation?

A

Isaac Newton

23
Q

At what rate do all falling objects accelerate?
At what rate do all falling objects accelerate?

A

9.8 m/sec^2

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