Test Flashcards

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1
Q

When determining distance and location use

A

reference points

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2
Q

reference point

A

a distinct location or object that is then compared to another location

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3
Q

SI Unit

A

international system of units

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4
Q

displacement

A

the change in position from the reference point

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5
Q

Displacement is measured with

A

no direction

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6
Q

Speed

A

the distance traveled during a specific unit of time

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7
Q

Velocity

A

the displacement of an object during a specific unit of time

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8
Q

What is the formula for speed?

A

s=d/t

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9
Q

What is the formula for velocity?

A

v=final time - initial time/t

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10
Q

Force

A

push or pull

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11
Q

Vectors

A

a drawing whose size and direction represent the magnitudes and direction of the forces acting on the object

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12
Q

What is the abbreviation for force?

A

fp

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13
Q

normal force

A

fn

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14
Q

friction

A

ff

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15
Q

gravity

A

fg

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16
Q

net force

A

the sum of all of the forces acting on an object

17
Q

Forces that act in the same direction

A

combine (add)

18
Q

Forces that act in opposite direction

A

counteract (subtract)

19
Q

balance force

A

when forces acting in opposite directions are exactly equal

20
Q

unbalanced force

A

when forces acting in opposite directions are unequal

21
Q

contact forces

A

friction, elastic, and air resistance

22
Q

field forces

A

gravity, electrical, and magnetic=

23
Q

When the force of gravity and the force of air resistance are equal and the acceleration is zero

A

terminal velocity

24
Q

If you increase the distance, the gravity will….

A

decrease

25
Q

If you increase the mass and weight, the gravity will….

A

increase

26
Q

friction

A

the force that has two surfaces exert when they run against each other

27
Q

projectile motion

A

anything that is thrown in the air

28
Q

Newton’s First Law

A

an object at rest well stay at rest will stay at rest unless acted on by an unbalanced force

29
Q

Newton’s Second Law

A

the rate of change of an object is directly proportional to the force applied that the net force on an object is equal to the mass of that object multiplied by the acceleration

30
Q

Newton’s Third Law

A

for every action there is an equal and opposite reaction

31
Q

inertia

A

property of an object that describes how much it will resist change to the motion of the object

32
Q

acceleration

A

a change in velocity, slowing down, and change in direction