A car accelerates from rest at 4m/s^2. What is its speed after 8 seconds?

Question

A car accelerates from rest at 4m/s^2. What is its speed after 8 seconds?

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im stuck

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wwhats the answer // how do i do it?

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Answer 1

acceleration (a) = change in velocity (vf - vi) / change in time (tf - ti), a = ((vf - vi) / (tf - ti)).  4m/s^2 = v / 8 seconds.  v = 4 m/s^2 * 8 seconds. v = 2 m/s