A constant force of `200N` displaces a body through `5 m` in the direction of the force. Find the work done on the body.

A force is required to do work. The work done by a force is the product of displacement and the component of force in the direction of displacement. Prove this statement.

A body of mass 5kg is acted upon by two perpendicular forces 8N and 6N .Give the magnitude and direction of the acceleration of the body.

A constant force is applied for 2 s on a body of mass 5kg. As a result, if the velocity of the body is changed from 3m/s to 7m/s, find out the value of the applied force.