CBSE Tutorials

Category: 9th Science

  • CBSE Physics Tutorials | Motion: Speed, Velocity and Acceleration

    Motion: Speed, Velocity and Acceleration Speed: – Speed of a body is defined as the distance travelled by it per unit time. i.e hence S.I Unit of speed is metre /sec. (m /s or ms – 1) Uniform speed: If a moving body covers equal distances in equal interval of time, then the speed of…

  • Physics 9th | Motion: Displacement

    Motion: Displacement Motion 1. A body is said to be in motion if it changes its position with time with respect to the observer. e.g. When a tree T is observed by an observer A sitting on a bench, the tree is at rest. This is because the position of the tree is not changing…