Question

Define work give SI unit of work write an expressions of positive work done​

Answer 1

Answer:

si unit of work is joule

moving a car

hitting bowl

kicking football

Answer 2

Answer:

in science,

work is defined as , when a force applied deon a body and the body get replaced .

thus, formula of work = f×s

where f=force and s= displacement.

si unit of work =Newton meter

that is also called joule in the honour of scientist.

1 joule is defined as when 1 newton force is applied on a body of mass 1 kg and the body get displaced 1 metre.

work is depend on

1. mass of the body
2. force applied on the body
3. co- sine angle between object and force applied.

types of work .

1. 0 work done -when the force is acting perpendicular to the object then work done will be zero

ex_ a person is carrying a bag on his head, then the work done by gravitational force is zero

2. negative work done- when the applied force and displacement are opposite in direction then the work done is negative.

ex- a person is trying to pulling a running car.

3. positive work done_work done is said to positive when the direction of and displacement are same

ex_ a boy is pushing a car.

hope it will help you please mark me as a brainlist ✌️✌️