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A truck of width 6 m is moving on a straight road with a speed of 5m/s.Aperson at a distance of 8m from the truck wants to cross the road safely with minimum possible speed.Find the magnitude and direction of velocity ?Please give the full solution
here for truck
speed=5m/s,distance to be covered = 8m
therefore time taken t=distance / speed
=8/5=1.6 sec
now for man
distance to be covered s=6m,time=1.6sec
therefore
speed = distance/time
=6/1.6
=3.75 m/s is the req speed perpendiculur to the direction of truck
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