a man starts to walk towards the north with a uniform speed of 3 meters per second after 2 seconds he turned towards the east and moves with a uniform speed of 4m/s for another 2 seconds. Calculate the displacement of the object after 4 seconds of the journey
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towards north 2 sec at speed of 3m per sec = 2×3=6
towards east 2sec at the speed of 4m per sec = 2×4=8
more 4sec the person travelled =8m
hence , 6+8+8=23m.
Explanation:
becoz first he traveled 6m to north and 8m to east 6+8=15 ,and more 4 seconds means 8m more 15+8 =23m
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