A 1700 kg car tows a 2400 kg car, reaching a speed of 15 km/h in 11 seconds. Find the force needed to accelerate the vehicles and the minimum strength of the rope.
a) Force: 9000 N, Rope strength: 9000 N
b) Force: 10000 N, Rope strength: 10000 N
c) Force: 11000 N, Rope strength: 11000 N
d) Force: 12000 N, Rope strength: 12000 N
