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Uniform and Non-Uniform Velocity

An aircraft o...

Question

An aircraft on a runway has a steady acceleration of 3 m/ $s^{2}$ . If the aircraft passes one post on the runway at a velocity of 20 m/s, what is its velocity 8 seconds later?

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Solution

Acceleration $= 3 m / s^{2}$
Initial velocity $= 20 m / s$
$\to v = \to u + \to a t = 20 + 3 t t = 8 s e c o n d s$
Final velocity $\to v = 44 m / s$

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