The formula in finding the kinetic energy of an object is [tex] \frac{1}{2}mv^{2} [/tex].
KE = [tex] \frac{1}{2}mv^{2} [/tex]
= [tex]( \frac{1}{2})[/tex](7.0 kg)[tex] (5 m/s)^{2} [/tex]
= (3.5 kg)(25 m/s)
= 87.5
*We're going to round it off to its least significant value so that we can get the final answer.
The kinetic energy of the ball is 90 J.