<PRE><B>Question 338490</B>
two cars leave a crossroads at the same time. One heads north at 50km/h and the other heads east at 70km/h. How far apart art the cars after 0.5h? After 2h?
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it means that they are taking a right angle path.
{{{ Distance = rate * time}}}
car 1 rate = 50km/h
time = 0.5 hours
Distance = 50*0.5 = 25 km.
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Car 2 rate = 70km/h
distance = 70*0.5 = 35km.
35 km and 25 km are the legs of right triangle
{{{35^2+25^2= D^2}}}
1225+625=D^2
{{{D^2=1850}}}
{{{ D = sqrt(1850)}}}
D= 43.01 km.
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repeat the same for 2h time</PRE>