A train moving with an acceleration of 0.5 m / s2 stopped 30 seconds after the start of braking.
| December 14, 2020 | education
A train moving with an acceleration of 0.5 m / s2 stopped 30 seconds after the start of braking. what is the braking distance if the initial speed of the train is 15 m / s.
There is such a formula:
S = Vot + at ^ 2/2
We substitute everything we know into this formula:
S = 15 * 30 + 0.5 * 900/2 = 450 + 225 = 675 m
Answer: S = 675m.
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