If one person round 2 and half times of this rectangle, find displacement....
Find displacement...
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Explanation:
l=20m b=15m
no. of rounds=2½=5/2 rounds
1 round = perimeter of rectangle
perimeter of rectangle= 2×(l+b)
Distance=total actual length covered
=(5/2)×2×(l+b)
=5×(20+15)
=5×35
=175m
Displacement= shortcut distance between initial and final point
=AC(If we start at A and go anticlockwise the after 2½ rounds we will be at C)
AC can be calculated as follows-
By Pythagoras Theorem
AC²=AB²+BC²
AC²=20²+15²
AC²=400+225
AC²=625
AC=√625
AC=√(5×5×5×5)
AC=5×5=25m
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