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Dahasolnce [82]
3 years ago
6

Two locomotives approach each other on parallel track. Each has speed of 95 km/h with respect to the ground.If they are initiall

y 8.5 km apart. How long will it take before they reach each other?
Physics
1 answer:
irinina [24]3 years ago
3 0

Answer:

It will take 2.68 minutes for them to reach each other.

Explanation:

We use the two following kinematic equations, making the final position the same (for the moment they meet each other):

locomotive 1 -->  x_f=v*t

locomotive 2 -->  x_f=8.5\,-\,v*t

we make the two xf equal, and solve for the time (t) using v = 95 km/h:

95*t=8.5-95*t\\2*95*t=8.5\\t=8.5/(190)\\t = 0.0447\,\,hours

converting the hours into minutes by multiplying this value times 60;

t = 2.68 minutes

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