Two cars are moving in the same direction with a speed of 30 km/hr. They are separated from each other by 5 km. A third car moving in the opposite direction meets the two cars after an interval of 4 m

Question

Two cars are moving in the same direction with a speed of 30 km/hr. They are separated from each other by 5 km. A 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:

TestHub · Accepted Answer

The third car closes each 5 km gap at the relative speed ( v + 30 ) km/hr in 4 min = 1/15 hr: v + 30 = 5 × 15 = 75 , so v = 45 km/hr. Option D.

Physics - Kinematics Question with Solution | TestHub

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