I have been absent from my physics class for the past week due to an illness, and now am having troubles with some of my workbook questions. There are two in particular which my teacher had told me to know how to do as they would be on my test in the next few days. the ones he wrote out were... a 25 n force will accelerate a 15kg object over a horizontal and low friction surface from rest to 2.4 m/s in 1.4 s find the work done on the object. and a 25 n force is applied to a 15kg cart where the force of friction is 8.5N the distance travelled is 16.5 m the cart starts from a dead stop. Determine the carts final velocity using its kinetic energy. any help would be great.