Question

so!!! No one can answer my question??just give it a try

Here is the question but I need with explanation!!!

Please help me out!!! I need it for tomorrow. So, I need the answer right now. So, I keep my hope on brainly!!

Answer 1

hey mate

here is your answer

see the diagram carefully

we get to know that distance between 5 images of the balls is 15m.(as the half of first and half of last of the image makes only one image of the ball)

thus,in 1 sec ------ 10 images are captured.

and the distance between 10 images is 30m

thus, the velocity of the ball is 30m/s