Unit 1 AP Physics

Question 1

Full List of Prefixes

Answer 1

(T) Terra 10^12
(G) Giga 10^9
(M) Mega 10^6
(K) Kilo 10^3
Base 10^0
(c) centi 10^-2
(m) milli 10^-3
(µ) micro 10^-6
(n) nano 10^-9

Question 2

Fundamental SI Units

Answer 2

3 main (need to memorize)
- time (seconds)
- length (meter)
- mass (kilogram)
—————————
- light intensity (candela)
- number of atoms in an object (moles)
- electrical current (ampere)
-temperature (kelvin)

Question 3

Derived SI Units

Answer 3

1. Newton (N) = kg x (m/s^2)
2. Joule (J) = kg x (m^2/s^2)
3. Watt (W) = kg x (m^2/s^3)

Question 4

displacement

Answer 4

change in position

Question 5

Δx

Answer 5

delta x (change in the position x)

Question 6

speed

Answer 6

distance traveled in a given time interval/time interval

Question 7

velocity

Answer 7

displacement/time interval
Δx/Δt
-tells an objects speed and its direction

Question 8

magnitude

Answer 8

size or length of a vector

Question 9

3 main graphical equations

Answer 9

1. linear y=kx or y=mx+b
2. quadratic/2nd order polynomial y=kx^2 or y=ax^2+bx+c
3. inverse squared y=k(1/x^2)

Question 10

quantities are either

Answer 10

scalar or a vector

Question 11

vector

Answer 11

measurement has both magnitude and direction ex: displacement, force

Question 12

scalar

Answer 12

has only magnitude/an amount
ex: mass, time, distance