A car traveling 15 m/s speeds up to 25 m/s in 125 m. How much time does it take the car to do this?

s = 1/2 (u + v) t

125 = 1/2 (15 + 25) t

125 = 20 t

t = 125/20

t = 6.25

answer 6.25 seconds

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