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Motion and Forces Eq (Work and energy (Power Eq (Power = work/time, P =…
Motion and Forces Eq
Work and energy
Work Eq
Work = force * distance
W = fd
Gravitational potential energy Eq
GPE = mgh
m = mass, h = height, g = gravitational acceleration
Kinetic energy Eq
Kinetic energy = mass * velocity2/2
KE = 1/2mv2
Mechanical energy Eq
Mechanical energy = potential energy + kinetic energy
ME = PE + KE
Power Eq
Power = work/time
P = W/t
Power = energy/time
P = E/t
Machines
Mechanical advantage Eq
Mechanical advantage = output force/input force
MA = F out/F in
Efficiency Eq
Efficiency (%) = output work/input work * 100
Ideal mechanical advantage Eq
Ideal Mechanical Advantage = length of incline/height of incline
IMA = l/h
Ideal Mechanical Advantage = radius of input/radius of output
IMA = R in/R out
Ideal mechanical advantage = distance from input to fulcrum/distance from output to fulcrum
IMA = d in/d out
Motion
Speed Eq
Speed = distance/time
S = d/t
Acceleration Eq
Acceleration = final velocity - initial velocity/time
A = v final - v initial
Forces
Force Eq
Force = mass * acceleration
F = ma
Momentum Eq
Momentum = mass * velocity
P = mv
Gravity, friction, and pressure
Pressure Eq
Pressure = force/area
P = f/a