I think you go to my school!
Answer: 288 m
Explanation: 288 m is the correct answer because the question states that the ball is thrown at 96 m every second, and our question tells us that the ball travels 3 seconds. This means we have to multiply 96 x 3 = 288 m.
Temperature is measured with a thermometer
As we know by Gauss's law that

so for line charge the gaussian surface is cylindrical in shape
so we will have

now by rearranging the terms

so here we will have to find the x component of electric field so it is given by above equation

here x = distance from the wire where we need to find electric field