Question

Car A moving along a straight horizontal road with a
velocity 60 km · h-1 is followed by car B moving with a
velocity 70 km · h-1. When car B is at a distance 2.5
km from car A, car B applies a retardation of
20 km · h-2. Where and when will the two cars meet?
1
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Answer 1

Answer:

car-A travels at a speed of 60 km/hr. car-B travels at a speed of 70 km/hr. Let us consider car-B travelling ahead and the distance between car-A and car-B is 2.5 km when car-B started decelerating at 20 km/(hr)2. Let, after travelling X km in t hours, car-B catches up car-A. We can write the equation of motion as follows.

Answer 2

Answer:

so difficult bro for me