Formulas for Physics Flashcards
What is the formula for speed?
Speed (m/s) = distance (m) / time (s)
What is the formula for Velocity?
Velocity (m/s) = displacement (m) / time (s)
What is the formula for Acceleration?
Acceleration (m/s^2) = change in velocity (m/s) / time (s)
a = v-u / t [final velocity-initial velocity / time taken]
What is the formula for Distance?
Distance (m) = area under speed-time graph
D = (area of triangle) = 1/2 x b x h
D = (area of trapezium) = 1/2 x (a+b) x h
D = (area of square/rectangle) = l x b
What is the formula for Resultant force?
Force (N) = mass (kg) x acceleration (m/s^2)
F = ma
What is the formula for Pressure?
Pressure (Pa) = force (N) / area (m^2)
P = f/a
What is the formula for Weight?
Weight (N) = mass (kg) x gravitational field strength (10 N/kg)
W = mg
What is the formula for Density?
Density (kg/m^3) = mass (kg) / volume (m^3)
What is the formula for Moment of force?
Moment (Nm) = force (N) x perpendicular distance (m)
M = f x d
What is the Principle of moments?
Sum of anti clockwise moments = sum of clockwise moments
F1 x d1 = F2 x d2
What is the formula for Work Done?
Work done (J) = force (N) x distance moved (m)
W = F x d
What is the formula for Kinetic Energy.
Kinetic Energy (J) = 1/2 x mass (kg) x velocity^2 (m)
KE = 1/2mv^2
What is the formula for Kinetic Energy.
Kinetic Energy (J) = 1/2 x mass (kg) x velocity^2 (m)
KE = 1/2mv^2
What is the formula for Gravitational Potential Energy?
Gravitational Potential Energy (J) = mass (kg) x g (N/kg) x height (m)
GPE = mgh
What is the formula for Power?
Power (W) = work done (J) / time (s)
P = W/t
Power (W) = energy (J) / time (s)
P = E/t
