If a runner decreases his velocity from 0m/s to + 20m/s in 2.0s, what is was his average acceleration?

Question

Physics

Tomcat

27 January, 21:36

If a runner decreases his velocity from 0m/s to + 20m/s in 2.0s, what is was his average acceleration?

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Answers (1)

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Teresa · Answer 1

-10 m/s²

Explanation:

Average acceleration is change in velocity over change in time.

a = (v - v₀) / (t - t₀)

a = (0 m/s - 20 m/s) / (2 s - 0 s)

a = - 10 m/s²