Respuesta :

AL2006
             Power  =  (work done) / (time to do the work)

             Work  =  (force) x (distance)

If you want to lift a 490N object, you'll need (at least) 490N of force.
So, when you lift it 2 meters vertically, the work you do is

             Work  =  (490 N) x (2 m)  =  980 joules
and
             Power = (980 joules) / (10 sec)  =  98 watts .  
                 

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