Answer
Please see the work below.
Work Step by Step
We know that
$v_f^2-v_i^2=-2gx$
This simplifies to:
$v_i=\sqrt{(0)^2+(2)(9.8)(6.5)}$
$v_i=11.3\frac{m}{s}$
Essential University Physics: Volume 1 (4th Edition)
by Wolfson, Richard
Published by
Pearson
ISBN 10:
0-134-98855-8
ISBN 13:
978-0-13498-855-9
Chapter 2 - Exercises and Problems - Page 31: 36
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