Ch.11-14 Units & Variables

Distance

  • Variable: distance

  • Variable Symbol: d

  • Unit: meter

  • Unit Symbol: m

  • Unit Conversion Formula: 1m=100cm1m = 100 cm

Height

  • Variable: height

  • Variable Symbol: h

  • Unit: meter

  • Unit Symbol: m

Length

  • Variable: length

  • Unit: meter

  • Unit Symbol: m

Time

  • Variable: time

  • Variable Symbol: t

  • Unit: Second

  • Unit Symbol: S

  • Unit Conversion Formula: 1hr=3600s1 hr = 3600s

Speed

  • Variable: speed

  • Variable Symbol: S

  • Unit: meter / sec

  • Unit Symbol: m/s

Velocity

  • Variable: velocity

  • Variable Symbol: V

  • Unit: meter/sec

  • Unit Symbol: m/s

  • Formula: v=s÷tv = s \div t

Acceleration

  • Variable: acceleration

  • Variable Symbol: a

  • Unit: meter per second squared

  • Unit Symbol: m/s2s^2

Force

  • Variable: force

  • Variable Symbol: F

  • Unit: Newton

  • Unit Symbol: N

  • Formula: F=maF = ma

Mass

  • Variable: mass

  • Variable Symbol: m

  • Unit: kilogram

  • Unit Symbol: kg

  • Conversion: 1N=101.97g1N = 101.97g

Momentum

  • Variable: momentum

  • Variable Symbol: P

  • Unit: Kilogram meter/sec

  • Unit Symbol: kg · m/s

  • Formula: p=mvp = mv

Power (Watt)

  • Variable: power

  • Variable Symbol: P

  • Unit: Watt

  • Unit Symbol: W

  • Conversion: 1W=1J/s1 W = 1 J/s

Power (Horsepower)

  • Variable: power

  • Variable Symbol: P

  • Unit: Horse Power

  • Unit Symbol: hp

  • Conversion: 1hp=746watts1 hp = 746 watts

Work

  • Variable: work

  • Variable Symbol: W

  • Unit: Joule

  • Unit Symbol: J

  • Conversion: 1J=1N⋅m1J = 1 N\cdot m

  • Formula: W=F⋅dW = F \cdot d

Weight

  • Variable: weight

  • Variable Symbol: W

  • Unit: Newton

  • Unit Symbol: N

  • Conversion: 1N=(kg⋅m)/s21 N = (kg \cdot m)/s^2

  • Formula: w=mgw = mg

Gravity

  • Variable: gravity

  • Variable Symbol: g

  • Unit: meters per second squared
    Formula: F=G(m1⋅m2/r2)F= G (m1\cdot m2/r^2)