This question has popped up elsewhere on here but i'm a little dubious on some of the answers. Anyway here goes, any help appreciated.
A horizontal force of 80N acts on a mass of 6kg resting on a horizontal surface. The mass is initially at rest and covers a distance of 5m in 0.92s under the action of force. Assuming there are no energy losses due to air resistance and therefore that the acceleration is constant: Calculate the total energy expended in the acceleration.