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two tains one travelling at 72kmh^(-1) a...

two tains one travelling at `72kmh^(-1)` and other at `90 kmh ^(-1)` are heading towards one another along a strauight level track. When they are 1.0km apart, both the drivers simultanously see the other 's train and apply brakes which restard each train at the rate of `1 .0ms^(-2)`.determine whether the trains would collide or not.

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