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a car changes speed from 15m/s to 8m/s in 20 seconds. calculate the acceleration

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calculate the acceleration.

asked Feb 28, 2014 in CALCULUS by payton Apprentice

1 Answer

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An initial velocity (v₁) of car is 8m/sec and the final velocity (v₂) of car is 15m/sec.

The formula for acceleration a = change of velocity (dv) / time (t).

The change of velocity (v₂ - v₁) = 15 - 8 = 7 m/s.

The time (t) is 20 seconds.

Subtitute the value of dv = 7 m/s, t = 20s in the acceleration formula.

a = 7 / 20 = 0.35 m/sec^2.

The solution is 0.35 m/sec^2.

answered Feb 28, 2014 by david Expert

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