Answer:
101 J
Explanation:
The kinetic energy of an object is given by
[tex]K=\frac{1}{2}mv^2[/tex]
where
m is the mass of the object
v is its speed
For the baseball in this problem,
m = 0.140 kg
v = 38.0 m/s
Substituting into the equation, we find the kinetic energy of the ball:
[tex]K=\frac{1}{2}(0.140)(38.0)^2=101 J[/tex]