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23-08-2020
Physics

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if abus travelling at 20m/s is subject to steady decceleration of 5m/s².how long will it take yo come to rest.

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23-08-2020

Answer:

4 seconds

Explanation:

Given:

v₀ = 20 m/s

v = 0 m/s

a = -5 m/s²

Find: t

v = at + v₀

0 m/s = (-5 m/s²) t + 20 m/s

t = 4 s

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