AQA Physics equations (year 10 only)

• power = energy transferred / time
• power = work done / time
• efficiency = useful output energy transfer / total input energy transfer
• efficiency = useful power output/ total power input
• potential difference = current x resistance
• density = mass / volume
• weight = mass x gravitational field strength
• work done = force x distance (along the line of action of the force)
• force = spring constant x extension
• moment = force x distance (along the line of action of the force)
• current = charge / time
• energy = charge x potential difference
• pressure = force / area
• internal energy = kinetic energy + potential energy
• Change in energy = mass x specific heat capacity x change in temperature
• pressure = depth x density x gravity
• Change in pressure = change in height x density x gravitational field strength
• Distance = 0.5 x speed x time