Answer:
124 kg
Explanation:
The kinetic energy of the ball is given by
[tex]K=\frac{1}{2}mv^2[/tex]
where
m is the ball's mass
v is its speed
In this problem, we have:
K = 1550 J
v = 5 m/s
Solving for m, we find the mass:
[tex]m=\frac{2K}{v^2}=\frac{2(1550)}{5^2}=124 kg[/tex]
