An octopus spots its favorite meal ahead!, a lobster! (Me, too,boo. Me, too) What is the octopus' mass if it darts at 12 m/s(an octopus is faster than Michael Phelps!) and has 3,168Joules of kinetic energy?

Respuesta :

To find the mas, we use the kinetic energy definition

[tex]K=\frac{1}{2}mv^2[/tex]

Where K = 3,168 Joules and v = 12 m/s.

[tex]\begin{gathered} 3,168J=\frac{1}{2}\cdot m\cdot(12m/s)^2 \\ 2\cdot3,168J=m\cdot144m^2/s^2 \\ \frac{6,336}{144}kg=m \\ m=44\operatorname{kg} \end{gathered}[/tex]Hence, the octopus' mass is 44 kilograms.