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18. A rock falls from a cliff and strikes the ground in 4.54 s with a velocity of -65.2 m/s. The initial velocity of the
18. A rock falls from a cliff and strikes the ground in 4.54 s with a velocity of -65.2 m/s. The initial velocity of the rock was
A. -44.5 m/s
B. -20.7 m/s
C. + 20.7 m/s
D. + 110 m/s
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Solid State Physics Second Edition
Authors: Charles Kittel
2nd Edition
1114173568, 978-1114173569
