Q2 of 47 Page 8

A cyclist travels a distance of 4 km from P to Q and then moves a distance of 3 km at right angle to PQ. Find his resultant displacement graphically.


Using Pythagoras theorem: PQ2 + QR2 = PR2


42 + 32 = PR2
PR2 = 16 + 9 = 25


PR = 5 km

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