A gardener pushes a lawn roller along a straight path in the playground by applying a…
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A gardener pushes a lawn roller along a straight path in the playground by applying a constant horizontal force of 150 N. The roller moves 35 m in the direction of the applied force.
(i) Calculate the work done by the gardener on the roller.
(ii) Express your answer in kilojoules.
(iii) State whether the work done is positive or negative and give a brief reason for your answer.