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Two cars start moving from the same point. One travels south at 48 mi/h and the other travels west at 20 mi/h.?
At what rate is the distance between the cars increasing three hours later?
- iggyLv 41 decade agoFavorite Answer
**distance from starting point car 1= c1
distance= speed x time
c1 = speed x time
**distance form starting point car2=c2:
to calculate the distance between c1 and c2 use pythagoras
let be d12 =distance between c1 and c2 :
(d12)^2 = (c1)^2 + (c2)^2
d12 = sqr [c1^2 + c2^2]
d12 =sqr(2304t^2 + 400t^2)
d12 = sqr(2704t^2)
the distance between the cars is increasing at a rate of 52 miles per hour
after 3 hours the distance between them is :
52*3 = 156 miles
I hope you understood
- 1 decade ago
it would be 84
- ranjankarLv 71 decade ago
1.35miles per hour/