While helping a friend move, you lift a 176 N box of books and perform 180 J of work to do so.   What distance, directly upward, do you lift the box?  

Show all work, starting with the formula and variables, then the rearrangement of variables if needed, then the substitution of values into the equation otherwise no marks will be awarded.

A bungee jumper with a weight of 588 N leaps off a bridge.  The jumper is in free fall for a distance of 24.0 m before the cord begins to stretch.  How much work, in kilojoules, does the force of gravity do on the jumper before the cord begins to stretch.  

Show all work, starting with the formula and variables, then the rearrangement of variables if needed, then the substitution of values into the equation otherwise no marks will be awarded.

You and your neighbour are mowing your lawns.  If your neighbour pushes a lawnmower five times as far as you do, but exerts only half (1/2) of the force, which one of you does more work and by how much?  

Remember to show all your work (and formula) in your answer, and note that you can made up values for force and distance .

Complete analysis question 3 from the virtual lab "It's All Uphill."  When a force does work, the object's energy will change.  In this interactive, the work causes a _____ energy change.