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A man walks 30 mtowards north, then 20mtowardseast and in the last 30 V 2 m towards south -west.The displacement from origin is:(1) 10 m towards west(2) 10 m towards east7.(3) 60/2m towards north west(4) 60V 2 m towards east north |
Answer» <p>Let north be +j direction and east be +j direction </p><p>so the displacement are 30j + 20i </p><p>and at last , for south west the directions are just opposite = -30i-30j giving the magnitude of 30√2</p><p>now adding all, we get </p><p>displacement as = 20i+30j-30i-30j = -10i </p><p>the answer is 10 m towards west.. ( -ve sign) </p> | |