Solve each problem. write your answer and solution.

1. how much is done by mila when she exerted a 25n force in lifting her bag to a height of 2m?

2. a 10kg block of wood is pulled across a level ground by fore of 15n applied at an angle of 30 degree from the horizontal. how much work is done, if it is moved to a distance of 3m?

(note: f applied = 15n x cos 30 degree, cos 30 degree = 0.5)

3. what is the work done by a boy in pushing the wall of the classroom, if he

applied a force of 30n?

4. a man weighing 500n walks a flight of stairs 10m high. how much work is

done by the man?

5. a sack of rice with a mass of 120kg is lifted by a laborer in a 15m high

building. compute the amount of work done by the laborer.