Answer
$h_{max}$ = 3.2m
Work Step by Step
the maximum height is leading to final speed of 8m/s when released from rest
$h_{max}$ = $\frac{v_{f}^{2}-v_{i}^{2}}{2a}$ = $\frac{(8m/s)^{2}}{2 \times 10 m/s^{2}}$ = 3.2m
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