# physical science

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During a race, a runner runs at a speed of 6m/s. 2 seconds later, she is running at a speed of 10 m/s what is the runner's acceleration?

• physical science -

V = Vo + a*t = 10 m/s.
6 + a*2 = 10
2a = 4
a = 2 m/s^2.

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