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WibblallyKCC

Answered question

2022-11-23

Two locomotives approach each other on parallell tracks. Each has a speed of 95 km/h with respect to the ground. If they are initially 8.5 km apart, how long will it be! before they reach each other?

Answer & Explanation

moralizoL31

Beginner2022-11-24Added 9 answers

for left train

V_{l} = 95 k m / h

for right train

V_{r} = - 95 k m / h

Velocity of left relative to right train is

V_{l r} = V_{l} - V_{r} = 95 k m / h - (- 95 k m / h) = 190 k m / h

t = \frac{S}{V_{l r}} = \frac{8.5 k m}{190 k m / h} = 0.0447 h = 2.68 m i n = 161 s

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