Answer:
About 0.3 s
Explanation:
First of all, we need to calculate the speed of the bat relative to the ball. This is given by the sum of the speed of the ball and the speed of the bat:
[tex]v = 40 + 18.0 = 58.0 m/s[/tex]
Now, the time elapsed before the bat hits the ball is given by:
[tex]t=\frac{d}{v}[/tex]
where
d = 18 m is the initial distance between the bat and the ball
v = 58.0 m/s is the speed of the bat relative to the ball
Substituting,
[tex]t=\frac{18}{58}=0.31 s[/tex]
So the closest answer is
About 0.3 s
