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 answer:

s =  540 km

Step-by-step explanation:

v1=680 km/h v2=840 km/h t=1/2=21=0.5 h  s1=v1 t=v1 21=680 0.5=340 km s2=v2 t=v2 21=840 0.5=420 km s=s12+s22=3402+4202=20 730=540 km

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