The
1.5-Mg four-wheel-drive jeep is used to push two identical crates,
each having a mass of 500 kg. If the coefficient of static friction
between the tires and the ground is f.Ls = 0.6, determine the
maximum possible speed the jeep can achieve in 5 s without causing
the tires to slip. The coefficient of kinetic friction between the
crates and thegroundisf.Lk = 0.3.