# Foundations in Physics

?
Physical quantities have what?
A numerical value and a unit
1 of 19
What does S.I stand for?
Systeme Internationale
2 of 19
What is the S.I unit for mass?
kg
3 of 19
What is the S.I unit for length?
m
4 of 19
s is the S.I unit for what?
Time
5 of 19
What is the S.I unit for current?
A
6 of 19
What is the S.I unit for temperature?
K
7 of 19
What is the S.I unit for an amount of substance?
mol
8 of 19
Give an example of a derived unit of S.I base units
Momentum = kg m S-1 and Density = kg m-3
9 of 19
You can check the what of physical equations using S.I base units?
Homogeneity
10 of 19
Name some prefixes and their symbols
Pico (p), Nano (n), Milli (m), Centi (c), Deci (d), Kilo (k), Mega (M), Giga (G), Tera (T)
11 of 19
Define the word 'precision'
The quality, condition, or fact of being exact and accurate
12 of 19
Define the word 'accuracy'
The quality or state of being correct or precise
13 of 19
What is a scalar quantity?
A quantity with only magnitude
14 of 19
What is a vector quantity?
A quantity with both magnitude and direction
15 of 19
16 of 19
What is vector subtraction?
Subtracting vector components
17 of 19
How do you resolve a vector into two perpendicular components?
Fx = F cos  θ; Fy = F sin θ
18 of 19
What can vector triangles be used to determine the resultant of?
Any two coplanar vectors
19 of 19

## Other cards in this set

### Card 2

#### Front

What does S.I stand for?

#### Back

Systeme Internationale

### Card 3

#### Front

What is the S.I unit for mass?

### Card 4

#### Front

What is the S.I unit for length?

### Card 5

#### Front

s is the S.I unit for what?