Science, asked by paxsondias10, 1 year ago

two trains 120 metre in 80 metre in length are running in opposite direction with velocity 42 kilometre and 30 km per hour in what time they will completely cross each other

Answers

Answered by p6112971

Answer:

10 s

Explanation:

total distance - 120+80-200m

relative velocity -42+30-72kmph

72*5/18-20m/s

time - 200/20-10

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