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CBSE 9th Physics | Force and Laws of Motion: Part 1
Force and Laws of Motion: Part 1 Force Definition : A pull or push acting on a body which changes or tends to change the speed of the body or direction of motion of the body or the shape and size of the body is known as force. A force influences the shaped and motion…
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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…