Forces and Motion Topic

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Forces and Motion Topic by Mind Map: Forces and Motion Topic

1. temperature – eg 10 degrees Celsius (°C) mass – eg 5 kilograms (kg) energy – eg 2,000 joules (J) distance – eg 19 metres (m) speed – eg 8 metres per second (m/s) density – eg 1,500 kilograms per metre cubed (kg/m3)

2. Electricity P = V x I. power = voltage x current. V = I x R. voltage = current x resistance. Q = I x t. charge = current x time. E = V x Q. energy = voltage x charge. E = V x I x t. energy = voltage x current x time. Transformer Equation: Total cost = number of units x cost per unit.

3. Energy Efficiency (%) = (useful energy out ÷ total energy in) x 100. GPE = mgh. GPE = mass x gravity x height. KE = ½mv2. Kinetic Energy = 0·5 x mass x velocity2. W = F x d. work done = force x distance. W = E. work done = energy transferred. P = E ÷ t. power = energy ÷ time. E = c x m x θ. energy = specific heat capacity x mass x change in temperature.

4. Forces and Motion s = d ÷ t. speed = distance ÷ time. a = (v-u) ÷ t. acceleration = change in velocity ÷ time. F = m x a. Force = mass x acceleration. w = m x g. weight = mass x gravity. p = m x v. momentum = mass x velocity. (mv - mu) = F x t. change in momentum = Force x time. d = m ÷ v. density = mass ÷ volume. p = F ÷ a. pressure = force ÷ area. m = F x d. moment = force x perpendicular distance from pivot. Waves v = f x λ. velocity = frequency x wavelength.

5. When drag is equal to weight, there is no net external force on the object and the vertical acceleration goes to zero. With no acceleration, the object falls at a constant velocity as described by Newton's first law of motion. The constant vertical velocity is called the terminal velocity

6. This shows motion graphs