Q. 2 B4.2( 11 Votes )

Choose one or mor

Answer :

Option(ii) Work , (iv) Energy

Explanation:


We know work done W on a body, which moved a distance S due a force F applied on it is given as


W = FS


SI unit of work done is Joules (J) so 1 J work is said to be done when 1N force is applied on a body and moves it by 1m


i.e. 1 J = 1N × 1m


now work and energy can be interconverted and as we know work done on a body against some external force to change position of body is Potential energy , and work done to increase the speed of the body is called kinetic energy. So energy of a body is equivalent to some type of work done, i.e. work and energy have same unit Joule


Unit of force is Newton (N) and unit of power is watt (W)


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