This is a uniform rectilinear motion (MRU) exercise.
To start solving this exercise, we obtain the following data:
To calculate the distance, multiply the speed by the time.
We apply the following formula: d = v * t
We clear our data in the formula:
[tex]\bf{d=3.8\dfrac{m}{\not{s}}*15 \not{s} }[/tex]
[tex]\bf{d=57 \ m}[/tex]
The baseball in 15 seconds will roll a distance of 57 meters.