Respuestas

2013-11-19T20:11:39+01:00
60 Km/h = 60.000 / 3600 = 16,66 m/sg

v = a . t 

a = v/ t = 16,66 / 12 = 1,39

F = masa x aceleracion = m x a = 1540 x 1,39 = 2140,60 Newton