SOLUTION: how long does it take a automobile traveling 71.4km/h to become even with a car traveling in another lane 61.4km/h if the cars front bumper s are initially 125m apart? answer in un
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Question 34419: how long does it take a automobile traveling 71.4km/h to become even with a car traveling in another lane 61.4km/h if the cars front bumper s are initially 125m apart? answer in units of s Answer by hydromojo(20) (Show Source):
You can put this solution on YOUR website! The dreaded travelling cars (or trains) -> used to send shivers down my spine in school. Hope I can help now since I kinda understand it.
Basic equation for time = (distance/speed)
If moving in the same direction, relative speed = big speed - small speed
if in opposite directions, relative speed = big speed + small speed
In our case, since the cars are moving in the same direction, relative speed = 71.4-61.4 = 10 Km/hr
distance = 125mtrs = .125Km
so, time taken = = .0125hrs = .0125*60 mts = .0125*60*60 sec
= 45 sec
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