nghindinihambajacob nghindinihambajacob

11-08-2021
Physics

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A racing car going a 20 m/s stops in a distance of 20 m.What is its acceleration?

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aichikt aichikt

11-08-2021

step by step

formular v^2 = u^2+2as

stop v = 0

0 = 400+2a(20)

-400=40a

a = -10 m/s^2

ans affect acceleration is 10 m/s^2

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