Two aircraft

From the airport will start simultaneously two planes, which fly tracks are perpendicular to each other. The first flying speed of 680 km/h and the second 840 km/h. Calculate how far the aircraft will fly for half an hour.

Correct result:

s =  540 km

Solution:

v1=680 v2=840 t=0.5 s1=v1 t=680 0.5=340 s2=v2 t=840 0.5=420 s=s12+s22=3402+4202=20 730=540 km



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