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A bus slows down uniformly from 75.0 km/h ( 21 m/s) to 0 km/h in 21 s. How far does it travel before stopping
A bus slows down uniformly from 75.0 km/h ( 21 m/s) to 0 km/h in 21 s. How far does it travel before stopping
In this question two important things are already given . Let us first note them down first.Speed of the bus = 75.0 km/hr or 21/sTime before it finally stops = 21second.It is better to calculate in miles per second as the time given is in second. This will make the problem easier.We already know thatDistance traveled = Speed * time= 21 * 21 meters= 441 metersSo the bus will stop after traveling a distance of 441 meters.This distance can be converted to kilometer as well very easily now.1000 meter = 1 km441 meters = 441/1000 km= 0.441 kmSo the bus will stop after 441 meters or 0.441 kilometers....
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