Question

Two cars leave an intersection at the same time. Car X is travelling East at 50 km/hr and Car Y is travelling South at 60 km/hr. Find the rate at which the cars are separating after 30 minutes.
I want its complete solution

Answer 1

how far apart are they ?

t in hours

sqrt (x^2 + y^2)
=sqrt [(50t)^2 + (60 t)^2]
so
d = (2500 + 3600)^.5 t
d = 78.1 t
so separation speed is 78.1 mph
all the time