Motion and Forces

Motion

Speed= distance/ time

30 km/h

acceleration= final velocity- initital velocity/ time

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Force

Force= mass x acceleration

acceleration= force/mass

m= force/acceleration

momentum= mass x velocity

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Gravity, friction and pressure

pressure= force/ area

g/cm(to the 3rd)

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work and energy

work= force x distance

power= work/ time

power= energy/ time

Machines

mechanical advantage= output force/ input force

efficiency (%)= output work/ input work

ideal mech advantage= length of incline/ height of incline

ideal mech adv= radius of input/ radius of output