Answer:
112 J
Explanation:
The kinetic energy of a body is given as:
[tex]KE = \frac{1}{2}mv^2[/tex]
where m = mass
v = velocity
The mass of the ball is 3.5 kg.
The velocity of the ball is 8 m/s.
The kinetic energy of the ball is therefore:
[tex]KE = \frac{1}{2} * 3.5 * 8^2\\ \\KE = 112 J[/tex]