At the start of a race, a runner’s velocity changes from 0 to 4.0 m/s. It takes him 2 seconds to speed up. His acceleration is ______ m/s2.

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01-03-2018
Mathematics

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At the start of a race, a runner’s velocity changes from 0 to 4.0 m/s. It takes him 2 seconds to speed up. His acceleration is ______ m/s2.

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MarkV MarkV · Answer 1 · 2018-03-01T15:50:51+01:00

MarkV MarkV

01-03-2018

To find the acceleration we divide the change of velocity by the change of time.
Change of velocity: 4 m/s
Change of time: 2 s

Acceleration = [tex] \frac{4}{2} = 2[/tex]

So the answer: his acceleration is 2 m/s^2

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delaneysheets4833 delaneysheets4833 · Answer 2 · 2020-09-23T14:57:11+02:00

delaneysheets4833 delaneysheets4833

23-09-2020

His acceleration is, 2 m/s^2!

Hope this helps! :)

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