Q1

Question 1

The difference between the measured/estimated value from the true value is called the?

Answer 1

error

Question 2

2 Types of error

Answer 2

RANDOM
SYSTEMATIC

Question 3

Errors you cannot control

E.g. measuring something and it ends in the middle of lines so you estimate.

Answer 3

Random error

Question 4

start measurement with zero to lessen uncertainty

Answer 4

Zeroing uncertainty

Question 4

broken equipment

wrong usage of equipment

Answer 4

Systematic error

Question 5

this means doubt about the validity of the result of a measurement.

Answer 5

Uncertainty of measurements

Question 6

you decide for yourself what the measurement is

Answer 6

Judgement uncertainty

Question 7

thumb to pinky

Answer 7

handspan

Question 8

1 finger =

Answer 8

1 digit

Question 9

tallest finger to elbow

Answer 9

cubit

Question 10

1 foot step

Answer 10

pace

Question 11

one hand to another

Answer 11

armspan

Question 12

size of foot

Answer 12

foot span

Question 13

Measurements that are based on human body dimensions or common movements. They are often used in informal contexts or historical settings.

Answer 13

NON-STANDARDIZED MEASUREMENTS

Question 13

These measurements are inaccurate due to variability among individuals, lack of universal standards, inconsistent application, and their practical rather than precise nature.

Answer 13

NON-STANDARDIZED MEASUREMENTS

Question 14

Also referred to as imperial units

Answer 14

ENGLISH MEASUREMENTS

Question 15

A measurement system acknowledged internationally.

Decimal-based

Originated in France

Answer 15

METRIC UNITS

Question 16

The difference between the measure/estimated value from the true value.

Answer 16

ERROR

Question 17

refers to consistent, repeatable inaccuracies in measurements that occur due to flaws in the measurement process or equipment.

Answer 17

SYSTEMATIC ERROR

Question 18

the variability in measurements that arise from unpredictable fluctuations and uncertainties inherent in any measurement process.

Answer 18

RANDOM ERROR

Question 19

Determining the weight using equipment with using your judgment as a second opinion

Answer 19

Judgment Uncertainty

Question 20

t or f

All non-zero numbers are significant.

Answer 20

true

Question 21

t or f

Zeros between two non-zero digits are not significant.

Answer 21

f

Zeros between two non-zero digits are significant.

Question 22

Leading zeros are significant.

t or f

Answer 22

f

Leading zeros are not significant.

Question 23

Trailing zeros to the right of the decimal are significant.

t or f

Answer 23

true

Question 24

Trailing zeros in a whole number with the decimal shown are significant.

t or f

Answer 24

true

Question 25

Trailing zeros in a whole number with no decimal shown are significant.

t or f

Answer 25

false

Trailing zeros in a whole number with no decimal shown are not significant.

Question 26

numbers that are exact

1 dozen = 12 eggs

Answer 26

discrete

Question 27

have both magnitude and direction

E.g. displacement, velocity, momentum, force, lift, thrust

Represented with the use of arrows

Answer 27

Vector quantities

Question 27

indicates the direction in which the vector is pointing.

Answer 27

Head of the arrow

Question 27

numbers that are not exact
12 inches =13.48 cm

Answer 27

continuous

Question 28

have magnitude but no direction
E.g. volume, area, energy, work, pressure

Answer 28

Scalar quantities

Question 29

represents the starting point or origin of the vector

Answer 29

Tail of the arrow

Question 30

represents the magnitude of the vector

Answer 30

Length of the arrow

Question 31

North
South
East
West

Answer 31

Cardinal directions

Question 32

Northeast (NE) - 45º N of E / 45º E of N
Northwest (NW) - 45º N of W / 45º W of N
Southeast (SE) - 45º S of E / 45º E of S
Southwest (SW) - 45º S of W / 45º W of S

Answer 32

Intercardinal directions

Question 33

Vector sum of 2 or more vectors; produces the same combined effect

Answer 33

Resultant vector / resultant (FR)

Question 34

Called—- because vectors are connected at the tail at the same point of origin

Answer 34

tail to tail

Question 34

Called ——– method because you create a parallelogram by drawing imaginary lines parallel to each vector. Once these imaginary lines meet, a diagonal line from the same origin is drawn to the point of intersection of the imaginary lines. This diagonal line is the resultant vector.

Answer 34

parallelogram

Question 35

Same magnitude compared to the resultant vector but in the opposite direction.

Answer 35

Equilibrant vector (FE)

Question 36

A + B = B + A
The order in which you add numbers does not change the sum.

Answer 36

Commutative

Question 37

(A + B) + C = A + (B + C)
the way in which numbers are grouped when adding does not change the sum.

Answer 37

Associative

Question 38

Used when it is already confirmed that the given vectors form right angles which means they can also form right triangles

Answer 38

ANALYTICAL METHOD

Question 39

used when there are right triangles present

Answer 39

pythagorean theorem:

Question 40

used to find the missing side or angle of a right triangle

Answer 40

trigonometric functions / SOHCAHTOA:

Question 41

formula:
x= r cos 0
y= r sin 0

Answer 41

NoW, NoE, SoW, SoE

Question 42

formula:
x= r sin0
y= r cos0

Answer 42

WoN, WoS, EoN, EoS

Question 43

Conducting of experiments
Use of motion sensors, force tables, etc.

Answer 43

EXPERIMENTAL METHOD