# Answer to Question #3225 in Astronomy | Astrophysics for Anton

Question #3225

What is the kinetic energy of a 300g mass moving at 150,000 km/s?

Expert's answer

The kinetic energy of 300g mas can be calculated by the formula:

E = mv

E = mv

^{2}/2 = 0.3[kg]*(1.5 x 10^{5}[km/s] )^{2}/2 = 6.75 x 10^{9}Joules.
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