Una persona debe levantar un objeto de masa=100 kg. utiliza una palanca de primer género que mide 5 metros y ubica el objeto a 1m del fulcro¿A qué distancia del fulcro resultaría más eficiente aplicar la fuerza “Potencia”?.

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

How is the ideal mechanical advantage of a wheel and axle calculated?

You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?