“American Football, The Name Itself Suggests That It Is American Game Of Football. This Game Is Also Known As Gridiron Outside United State Of America And Called Football In US.” – American Football 2020 football lovers This Popular Game Is Different From The Football Or Soccer Known As Association Football That We Play Across In The […]

Dear Students, CLICK HERE FOR VIDEO: https://youtu.be/FAP6lAoud00This video contains explanation of Chapter – 11 of class 9th NCERT.In this video we understood what is work  and when we say that work is done.We studied when can work done be positive, negative or zero.Work by a force acting on object is when the force applying on object displaces […]