asupra unui corp actioneaza o forta de 100 N timp de 5 s .Daca viteza corpului variaza de la 5m/s la 15 m/s, aflati masa corpulu
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Time required : 3 s
<h3>Further explanation </h3>Power is the work done/second.
To do 33 J of work with 11 W of power
P = 11 W
W = 33 J