Man sitting in a car moving with 54km/hr observes another man B in front of car
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the car will be in motion with according to the man and the man is in motion according to the man sitting in the car
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The auto will be in movement with as indicated by the man and the man is in movement as per the man sitting in the auto.
Thus, introductory and last speeds are given: Initial Velocity, u = 54 km/h = 15 m/s Final Velocity, v = 63 km/h = 17.5 m/s change in speeds = v - u = 2.5 m/s change in time = 1 second.
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