## Physics (10th Edition)

Published by Wiley

# Chapter 6 - Work and Energy - Problems - Page 166: 15

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

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