A motorist travelling at 100km/hr, overtakes a 4WD towing a caravan. The 4WD and caravan tog are 13 m long and have a speed of 64 km/hr. The car is 5 metres long. How many seconds will it take from the time the front of the car is level with the back of the caravan to the time the back of the car is level with the front of the 4WD

• relative speed = 100-64= 36 kmph = 36*5/18= 10 mps
  Distance to be covered = 13+5= 18 mtrs
  time taken to cover this distance = 18/10=1.8 secs
• 10 years agoHelpfull: Yes(1) No(0)