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Science 10-1) > physics whole unit) > Flashcards

physics whole unit) Flashcards

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1
Q

how do you calculate sig digits without zeros

A

you count how many numbers the’re are

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2
Q

how do you calculate sig digits with zeros in front?

A

you count after the zeros and they dont count as ones

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3
Q

how do you calculate sig digets with zeros after numbers / in between numbers

A

you would count all the numbers including the zeros

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4
Q

what is the formula for velocity

A

v= d/t

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5
Q

what is the formula for speed

A

s=d/t

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6
Q

what is the formula for time

A

t=d/v

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7
Q

how do you find distance

A

you add all the numbers together.

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8
Q

how do you find displacement

A

you add the numbers together and add negatives according to the compus rules

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9
Q

what is displacement

A

It is the length from the starting point to the ending point and you put the directions

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10
Q

what is distance

A

distance is the whole length

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11
Q

what is vector and examples of an vector

A

a vector is a scale that includes direction, for example 15m north

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12
Q

what does scaler mean

A

a scaler just states the size / amount

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13
Q

how do you calculate the average ———

A

1) determine if you need to swap units
2) find formula / enter numbers into formula
3) after finding the answer check if the sig digets are correct

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14
Q

what does uniform mean

A

it stands for the graph increasing in a straight line

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15
Q

what does non uniform mean

A

it means its not going up at the same pace

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16
Q

what does constant velocity on a position time graph look like

A

horizontal straight uniform increasing line

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17
Q

changing pace meaning

A

the pace is constantly changing

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18
Q

how do you find displacement on a graph

A

by first calculating the area of the square a=bh then the triangle a=bh/2 then adding them

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19
Q

what is the slope formula

A

slope= y2-y
———
x2-x

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20
Q

what are the two different graphs

A

distance time graph (scalar)
position time graph (vector)

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21
Q

When there are 2 distances in a acceleration question what formula would you use

A

You would take away final velocity from initial then divide it by time

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22
Q

potential energy formula

A

Ep=mgh

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23
Q

kinetic energy formula

A

EK=1/2mv^2

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24
Q

work formula

A

W=fd

25
Q

potential energy rearranged so M mass is the subject

A

M= ep/gh

26
Q

potential energy rearranged so H is the subject

A

H= ep/gm

27
Q

potential energy rearranged so G is the subject

A

G= ep/hm

28
Q

kinetic energy so that v is the subject

A

v=√2EK/m

29
Q

kinetic energy so that m is the subject

A

m=2EK/v^2

30
Q

what is the formula for force

A

f= w/d

31
Q

what is the formula for distance

A

D=W/F

32
Q

what are work, Ep, and Ek all measured in

A

jouls (j)

33
Q

What is velocity measured in?

A

m/s

34
Q

what is gravity in potential energy measured in

A

m/s^2

35
Q

What is mass measured in?

A

kg

36
Q

What is height measured in?

A

m meters

37
Q

in mechanical energy ball positions when the ball is at the first and the last position what type of energy is it

A

potential energy

38
Q

in mechanical energy ball positions when the ball is at the middle/bottom/halfway what type of energy is it

A

it is full kinetic that transferred over

39
Q

When there are 2 distances in an acceleration question what formula would you use

A

You would take away final velocity from initial then divide it by time

40
Q

when there is a question asking for distance and there are only distances what do you do

A

you add them all up

41
Q

what do position time graphs find (vector)

A

velocity

42
Q

What do distance-time graphs find? (scaler)

A

speed

43
Q

What do velocity time graphs find?( vector)

A

acceleration

44
Q

with efficiency questions that have jouls in the question as well mentions ek and ep what do you do

A

you have to look at the other numbers it gives and to either ep or ek to find the input or output then use efficiency to solve

45
Q

what does increasing acceleration on a velocity-time graph look like

A

it is a curved line in a smiley face like shape

46
Q

what does acceleration on a velocity-time graph look like

A

it is in an increasing line that’s horizontal

47
Q

in the transfer between kinetic and potential energy where does the energy go

A

it gets lost to friction

48
Q

what does Magnitude stand for

A

size or amount

49
Q

what does Interval stand for

A

the difference between two times

50
Q

Potential energy definition

A

it stands for energy that is stored

51
Q

what does altitude stand for

A

the height relative to to sea level or ground level

52
Q

when about to drop something what type of energy does it first have

A

potential then is transferred to kinetic

53
Q

what does constant velocity on a velocity time graph look like

A

straight line not increasing or decreasing

54
Q

what does decreasing velocity look like on a position time graph

A

it is a curved sad face #emo4life

55
Q

when would you use the slope

A

when needing to find the velocity

56
Q

what does acceleration look like on a distance time graph

A

a curved line

57
Q

what way do positive and negative slopes go

A

positive goes in pos direction
negative goes in a neg direction

58
Q

what formula do you use when finding displacement

A

a=bh and a=bh/2

Science 10-1) (10 decks)

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