Answer to Question #172472 in Classical Mechanics for Jethro Torio

Question

An object from rest starts to accelerate at 2.5m/s^-2

Determine the time required to cover 100m.

Answer 1

$s=\frac{at^2}{2}\implies t=\frac{2s}{a},$

$t=\frac{2\cdot 100}{2.5}=80~s.$