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?

Answer 1

Acceleration $=3m/s^2$
Initial velocity $=20m/s$
$\overrightarrow{v}=\overrightarrow{u}+\overrightarrow{a}t=20+3tt=8seconds$
Final velocity $\overrightarrow{v}=44m/s$