A 2 tonnes car is towed by a 2.5 tonnes truck which moves off from rest and reaches a
speed of 2m/s before the tow-rope tightens on the stationary car. The rope then stretches
taking up the strain for 0.15 seconds.Find:
(a) the common speed when the rope ceases to stretch
(b) the average impulsive force in the rope.(Neglect resistance and the effect of the truck’s
propelling force during the stretching period
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