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Romain Delyfer · Answer 1 · 2023-07-02T20:36:09+0000

To find the speed, we have to use the kinetic energy definition

$K=(1)/(2)\cdot m\cdot v^2$

Where K = 890,000 Joules and m = 170,000 kg. Let's replace these values and solve for v

$\begin{gathered} 890,000J=(1)/(2)\cdot170,000\operatorname{kg}\cdot v^2 \\ 890,000\cdot2J=170,000\operatorname{kg}\cdot v^2 \\ (1,780,000)/(170,000)m^2/s^2=v^2 \\ v^2\approx10.5m^2/s^2 \\ v\approx\sqrt[]{10.5m^2/s^2} \\ v\approx3.2m/s \end{gathered}$

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Hence, its cruising speed is around 3.2 meters per second.

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