The motion of a truck is arrested using a bed of loose stones AB and a set of crash barrels BC. If experiments show that the stones provide a rolling resistance of 160 lb per wheel and the crash barrels provide a resistance as shown in the graph, determine the the distance x the 4500-lb truck penetrates barrels if the truck is coasting at 60 ft/s when it approaches A. Take s = 50 ft and neglect the size of the truck.

Transcribed Image Text:

60 ft/s А S- F (lb) F = (103) x3 в с txt -Х (ft)