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equations
Question | Answer |
---|---|
work | work=force x distance |
power | power= work/time |
weight/force | weight/force: mass x gravity (9.8 m/s2) |
kinetic energy | kinetic energy= 1/2 x mass x velocity |
mechanical advantage | =output force/input force |
efficiency | =output work/input work x 100 |
mechanical advantage of an inclined plane | =length/height |
mechanical advantage of a wheel and axel | =radius of wheel/radius of axel |
mechanical advantage of a pully | =number of ropes supporting the object |
velocity | velocity=gravity x time |
acceleration | acceleration= force/ mass |
momentum | momentum= mass x velocity |
gravitational potential energy | =weight x height |
mechanical energy | =potential energy + kinetic energy |