MCAT Phys

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pico - p

10^-12
nano - n

10^-9
micro -

10^-6
milli - m

10^-3
centi - c

10^-2
kilo - k

10³
mega - M

10⁶
giga - G

10⁹
Displacement
- position = position_final - position_initial
- Vector (magnitude and direction)
- net distance traveled, regardless of path taken
- units = meters
average velocity
- = displacement/time
- v = x/t
- v = d/t
- Vector (magnitude and direction)
- units = m/s
Speed
- Total distance traveled/time
- Scalar (magnitude only)
- Can never be negative
- units - m/s
pythagorean theorem
- c²= a² + b²
- 5 = 3 + 4
- 13 = 5 + 12
acceleration
- change in velocity/time
- a = v/t
- object can accelerate even if speed is constant
- Vector (magnitude and direction)
- units = m/s²
Big Equations - assuming acceleration is constant
- x = x_o + v_o + 1/2at²
- v = v_o+ at
- v² = v_o² + 2ax
- x = x_o +v_ot
slope of a x vs t graph

gives velocity
slope of a v vs t graph

gives acceleration
area under v vs t graph

gives displacement
Sin 0

0
Sin 30
- 0.5
- 1/2
Sin 45
- 0.71
- 1/
Sin 60
- 0.87
- /2
Sin 90

1.0
Sin 180

0
Cos 0

1.0
Cos 30
- 0.87
- /2
Cos 45
- 0.71
- 1/
Cos 60

0.5
Cos 90

0
Cos 180

-1.0