# Answer to Question #22052 in Mechanics | Relativity for chylsea

Question #22052

what is the kinetic energy of a 3-kg object moving at 7 m/s ?

Expert's answer

T = m*v^2/2

T - kinetic energy of the body

m - mass of the body

v - speed of the body

In our case:

v = 7 m/s

m = 3 kg

Therefore

T = 3kg*(7m/s)^2/2 = 147/2 J = 73.5 J

T - kinetic energy of the body

m - mass of the body

v - speed of the body

In our case:

v = 7 m/s

m = 3 kg

Therefore

T = 3kg*(7m/s)^2/2 = 147/2 J = 73.5 J

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