Question

define work and what is its SI unit?

Answer 1

Work is a force is said to do work if, when acting, there is a displacement of the point of application in the direction of the force.

SI unit of work is joule (J)

Answer 2

In physics, a force is said to do work if, when acting, there is a displacement of the point of application in the direction of the force. For example, when a ball is held above the ground and then dropped, the work done on the ball as it falls is equal to the weight of the ball (a force) multiplied by the distance to the ground (a displacement).

SI unit joule (J)

In short

The SI unit of work is the joule (J), which is defined as the work expended by a force of one newton through a displacement of one metre.