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Physics > Chapter 1 test > Flashcards

Chapter 1 test Flashcards

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Physics 101 flashcards AP® Physics flashcards
1
Q

what is physics?

A

studies the physical world,

studies mater and energy and how they interact

studying and understanding phenomena about why the world works the way it does

often using math

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2
Q

observation

A

an experience to collect data

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3
Q

Hypothesis

A

a claim about reality

an educated guess

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4
Q

independent variable

A

scientists changes the variable

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5
Q

dependent variable

A

responds to the change in the independent variable

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6
Q

control variable

A

components that are held constant

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7
Q

qualitative observations/data

A

descriptive; “ the chair is blue”

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8
Q

Quantitative observations/data

A

measured; “the volume of diet dr. pepper is 355ml.”

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9
Q

Accuracy

A

how close you are to the acceptable/true/right/value

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10
Q

precision

A

how close measurement are together

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11
Q

what is the base unit for length?

A

meters

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12
Q

what is the base unit for mass?

A

kilograms

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13
Q

what is the base unit for time?

A

seconds

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14
Q

position

A

Where an object is located “ the car starts at the grocery store”

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15
Q

Distance

A

total amount traveled by an object; “the route the car took between the grocery store and home was 4.5 Km.”

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16
Q

Displacement

A

the change in position related to the starting point; “ A car travels to the grocery store from home, then went back home, the displacement is 0Km.”

17
Q

speed definition

A

The magnitude of an object’s motion

scalar quantity - number of units

units m/s

18
Q

what is the speed formula?

A

Speed= distance traveled/ time

S=d/t

19
Q

velocity definition

A

object’s speed AND DIRECTION

vector quantity- number, units, and DIRECTION

20
Q

what is the velocity formula?

A

velocity=displacement/ time

V=Δx/ΔT

21
Q

what does the delta symbol (Δ) mean?

A

change in

22
Q

acceleration definition

A

change in velocity of an object over time

23
Q

What is the difference between velocity, acceleration, and speed?

A

Speed- the magnitude of the motion of an object

Velocity- the speed and DIRECTION of an object

acceleration- change in velocity over time

24
Q

what is the average acceleration formula?

A

a=Vf -Vi/t

25
Q

what is the displacement formula?

A

final position-starting position=displacement

26
Q

what is the uniform acceleration formula

A

vf=vi + a*t

27
Q

what does Δx mean

A

displacement

28
Q

what is the displacement formula?

A

x=1/2(vf+vi)(t)

29
Q

what is the time formula?

A

x=vit+1/2a*t^2

30
Q

What is the formula for when your missing the displacement?

A

vf2=vi^2+2(a)(Δx)

31
Q

what is the constant of gravity?

A

9.81m/s^2 or -9.81m/s^2

32
Q

down the SI conversion chart =

A

decimal to the right

Physics (7 decks)

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