Question

An object accelerates from rest to 26m/s. Assuming the acceleration to be constant, find the average speed of the object.

Answer 1

$$\begin{gathered} v=u+at \\ u=0,v=26m/s \\ \Rightarrow t=\frac{26}{a}s \\ Also, \\ {v}^2-u^2=2as \\ \Rightarrow s=\frac{{26}^2}{a} \\ Averagespeed=\frac{totaldis\tan ce}{totaltime}=\frac{s}{t}=\frac{{\displaystyle \frac{{26}^2}{a}}}{{\displaystyle \frac{26}{a}}}=\frac{26}{a} \end{gathered}$$