Physics GCSE (all equations)

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Physics Equations
Speed (m/s) = distance (m) / time (s) (s = d/t)
On a distance time graph: speed (gradient) = vertical distance/ time
Velocity time graphs: acceleration (gradient) = vertical change/ horizontal change
Velocity = distance/ time (v = d/t)
Calculating acceleration with resultant force: acceleration (m/s^2) = resultant force
(N) / mass (kg) (a = F/m)
Calculating acceleration with Velocity:
acceleration (m/s^2) = (final velocity (m/s) ­ initial velocity (m/s)) / time (s)
(a = (v ­ u)/t)
Stopping distance = thinking distance + braking distance
Weight (N) = mass (kg) x gravitational field strength (N/kg (on earth 10N/kg) (W = m x g)
Work done on an object: work done (J) = force (N) x distance (m) (w = F x d)
Potential energy = mass (kg) x gravitational field strength (N/kg) x height (m) (Ep = m x g x h)
Kinetic energy (J) = ½ mass (kg) x velocity^2 (m/s) (Ek = ½ m x v^2)
Force (N) = k x extension (m) (F = k x e)
Power (W) = work done (or energy transferred) (J) / time taken (s) (P = E / t)
Momentum (kg m/s) = mass (kg) x velocity (m/s) (p = m x v)
Current (A) = charge (C) / time (s) (I = Q / t)
Potential difference (/voltage) (J) = work done (J) / charge (C) (V = W / Q)
Energy transferred (J) = power rating (W) x time (s) (E = P x t)
Power (W) = current (A) x potential difference (or voltage) (P = I x V)
Energy transformed (J) = Charge (C) x potential difference (/voltage) (E = Q x V)

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