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
6
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