veralynn0808 veralynn0808

18-02-2017
Physics

Answered

With an average acceleration of -1.2 m/s squared, how long will it take a cyclist to bring a bicycle with an initial speed of 6.5 m/s to a complete stop

A2.0 seconds
B5.4 seconds
C0.18 seconds
D-1.8 seconds

Verified Answer :

Anonymous Anonymous

18-02-2017

Here, we know, a = v2 - v1 / t
Here, v2 - v1 = 0 - 6.5 = -6.5
a = -1.2 m/s²

Substitute their valuesm
-1.2 = -6.5 / t
t = -6.5 / -1.2
t = 5.4 s

In short, Your Answer would be Option B

Hope this helps!

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