# Chapter 2 - Describing Motion: Kinematics in One Dimension - Problems - Page 44: 28

23 m/s

#### Work Step by Step

$v_{o}$ = $\sqrt{v^{2} - 2a(x-x_{0})}$ $v_{o}$ = $\sqrt{0^{2} - 2(-4m/s^2)(65m)}$ $v_{o}$ $\approx$ $23m/s$

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