Important Variables to Know

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Vectors (require direction and magnitude)

s: Displacement

• in meters v: Velocity
• $m{s}^{-1}$, meters per second F: force
• Newtons J: work
• Joules i: Impulse
• $kgm{s}^{-1}$, kg per meters per second W: watts p: Momentum
• $kgm{s}^{-1}$, kg per meters per second N: Newtons a: Acceleration
• $m{s}^{-2}$, meters per, seconds squared g: Gravity, 9.8 $m{s}^{-2}$ , meters per, seconds squared

Scalars (require magnitude)

m: Mass

• grams |v|: Speed
• $m{s}^{-1}$, meters per second |s|, sometimes s: Displacement
• meters t: Time
• seconds h: Height
• meters

To convert $km{h}^{-1}$ to $m{s}^{-1}$, divide by $3.6$