Two cars are moving in the same direction with a speed of 30 km h –1 . They are separated from each other by 5 km. Third car moving in the opposite direction meets the two cars after an interval of 4 minutes. What is the speed of the third car?
Text Solution
Verified by ExpertsThe correct answer is:
C
Relative velocity between either car ( 1 st or 2 nd ) and 3 rd car = u + 30
where u = velocity of 3 rd car
Relative Displacement = 5 km
Time interval = 4 min.
∴ u + 30 = 
km/min
= 
km/h= 75 ⇒ u = 45 km/h
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