Answer
1450 kg
Work Step by Step
Work done = $\Delta$$E_{k}$
185000 = 0.5m($v^{2}$ - $u^{2}$)
m = $\frac{3.7 \times 10^{5}}{28^{2} - 23^{2}}$
$\approx$ 1450 kg
Physics (10th Edition)
by Young, David; Stadler, Shane
Published by
Wiley
ISBN 10:
1118486897
ISBN 13:
978-1-11848-689-4
Chapter 6 - Work and Energy - Problems - Page 166: 15
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