Question

A car accelerates uniformly from rest at 4m/s². How far will it travel in the fifth second?

Answer 1

$S_5=\frac{at_5^2}{2}=\frac{4\cdot5^2}{2}=50 m$

$S_4=\frac{at_4^2}{2}=\frac{4\cdot4^2}{2}=32m$

Distance covered in $5^{th}$ second

$S_5-S_4=50-32=18m$ Answer