Answer
Speed = 3.49m/s
Work Step by Step
Finding the speed when it gets back to the bottom:
$V_{o}$ = 0m/s since we start from rest
$V_{f}$ = $V_{o}$ + $at$
$V_{f}$ = 0 + (-5.19m/$s^{2}$)(0.674s)
$V_{f}$ = -3.49m/s
Speed = Absolute Value of Velocity = 3.49m/s
