a) What is a force? What changes can be produced by a force?
b) What is frictional force? Explain different kinds of frictional forces with examples?
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a)The push and pull given to an object is called force.The changes are:
●it can start the motion of an object.
●it can increase or decrease the speed of an object.
●it can change the direction of movement of a object.
●it can stop the motion of an object.
●it can change the shape and size of an object.
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