# One dimensional motion!

From a town, cars start at regular intervals of 30 s and run towards a second town with a constant speed of 60 km/hr so that the time between their arrival is $$\Delta t_1$$. At some point of time, all of the cars leaving the first town reduce their speed to 40 km/hr due to bad weather conditions. What will be the time interval between consecutive cars reaching the second town after slowing down?

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