Download FORMULAS

FORMULAS
What are you
looking for?
Speed
Velocity
Acceleration
Momentum
Wave Speed
Density
Volume Regular
Solid
Volume Irregular
Solid
Mass
Force
Weight
Pressure
Work
Power
Kinetic Energy
Potential Energy
Mechanical
Advantage
IMA of a Ramp
IMA of a Lever
IMA of a Wheel
and Axle
IMA of A Pulley
System
IMA of a Screw
Efficiency
Units
Formula
Motion Formulas
m/s
Speed = Distance ÷ Time (s=d/t)
m/s direction
Velocity = Distance ÷ Time in a direction (s-d/t in drctn)
2
m/s
Acceleration = Final Velocity – Initial Velocity ÷ Time
Kg(m/s)
Momentum = Mass (kg) x Velocity (m/s)
m/s
Speed = Frequency (Hz) x Wavelength (m)
Mass, Volume & Density Formulas
g/cm3
Density = Mass ÷ Volume
3
3
3
mm , cm m
Volume = Height x Length x Width
ml, mm3, cm3, Volume = Water level with object – Water level without
m3
object
g
Place object on a balance
Force Formulas
Newtons
Force = Mass (kg) x Acceleration (m/s2) F = ma
Newtons
Weight = Mass (kg) x Acceleration due to gravity (9.8
m/s2) (W=mg)
2
N/cm
Pressure = Force (N) ÷ Area (cm2) (P=f/a)
Joules
Work = Force (N) x Distance (m) (W=fd)
Watts
Power = work (j) (or force x distance) ÷ Time (s) (P=w/t)
Energy Formulas
Joules
Kinetic Energy = ½ x Mass x Speed² (KE=½ms2)
Joules
Potential Energy = Weight x Height (PE=wh)
Ideal Mechanical Advantage For Simple Machines
Record the
Mechanical Advantage = Output Force ÷ Input Force
number
(Number of times a force exerted on the machine is
multiplied by the machine)
Record the
IMA of a Ramp = Length of incline ÷ Height of incline
number
Record the
IMA of a Lever = Distance from fulcrum to input force ÷
number
Distance from fulcrum to output force
Record the
IMA of a Wheel and Axle = Radius of Wheel ÷ Radius of
number
Axle
Record the
IMA of a Pulley system = The number of sections of rope
number
supporting the object
Record the
IMA of a Screw = Circumference of screw ÷ Pitch of the
number
screw (Pitch = threads ÷ screw length in inches)
Record the
Efficiency = Output Work ÷ Input Work x 100% (How
number
much actual work is being done)