I have a problem that I cannot solve with the football game I did?

Scripting C# & .NET
,
1

I want to direct the ball with accelerated motion. How can I achieve that with Unity3D?
example :
https://www.youtube.com/watch?v=cHvYxB0C5lo

2

we can’t help with out more info. I video is not enough. we need code and more details.