Q. 1: What is force?
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in physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity.
SI unit: Newton
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Force is push or pull acting on a body which tends to change its state of rest or of motion.
It is denoted by "F".
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Additional information-
SI unit of force is Newton(N).
C.G.S (centimetre gram second) unit of force is dyne.
The direction in Which the body is pushed or pulled is called direction of the force.
Effects of force -
A force can change the direction of a moving object.
A force can change the shape and size of an object.
A force can change the speed of a moving object.
A force acting on a body can change its state of motion or rest.
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