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22/10/2021 6:41 pm
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If a bus travelling at 20 m/s is subjected to a steady deceleration of 5 m/s2, how long will it take to come to rest?
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22/10/2021 6:43 pm
Deceleration, a = -5m/s2
Initial velocity, u = 20 m/s
Final velocity, v = 0 m/s
t = ?
a = \(\frac{v - u}{t}\)
-5 = \(\frac{0 - 20}{t}\)
t = \(\frac{20}{5}\) = 4s