Question

two cars are moving in the same directions with the same speed of 30km/H. they are separated by a distance of 5km. a truck moving in the opposite direction meets these two cars at an interval of 4min. find the speed of truck.

Answer 1

Let the velocity of truck is 'x'
Relative velocity=30+x
distance =5000meters
time =4×60=240seconds

Relative velocity = distance/time
=5000/240
30+x=20.8
x =-9.2m/a
|x| =9.2m/a

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