Answer:
[tex]K=63J[/tex]
Explanation:
Hello,
In this case, the kinetic energy is defined as:
[tex]K=\frac{1}{2}mv^2[/tex]
Thus, since the mass is 14 kg and the velocity is 3 m/s we compute the resulting kinetic energy as shown below:
[tex]K=\frac{1}{2} *14kg*(3m/s)^2=63kg*m^2/s^2[/tex]
Nonetheless, based on the definition of Joules (N*m) as the major unit of energy, we shall understand that kg*m²/s² also equals Joules, for that reason the result is:
[tex]K=63J[/tex]
Best regards.