Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 7 - Kinetic Energy and Work - Problems: 21d

Answer

Speed of block $=(gd/2)^{0.5}$

Work Step by Step

Acceleration of block $=\frac{g}{4}$ Displacement $=d$ velocity=$v$ By using the Equation of Kinematics $v^{2}=u^{2}+2ad$ and substituting the expressions above, $v^{2}=0+2(\frac{g}{4})d$ $v^{2}= \frac{gd}{2}$ $v = (gd/2)^{0.5} $
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