1. The problem statement, all variables and given/known data The speed of a particle doubles and then doubles again because a net external force acts on it. Does the net force do more work during the first or the second doubling? Justify your answer. 2. Relevant equations I'm not sure, but i think E = 1/2 mv(squared) 3. The attempt at a solution Im pretty sure this has something to do with kinetic energy, but the question is asking about the net force doing work. How do I incorporate force into this?