1.Mark the actions in which work is being done
2.Choose the statement that lists all the magnitudes that the work done by a force depends on
3. The work done to move an object 5.1 m with a 1.4 N force in the direction of the movement is: (you may wish to use the visual 
)
4. The kinetic and potential energies of a 6 Kg object freely falling at 5 m/s from a height of 2 m is:
10. Energy is a physical magnitude that describes the capacity of an object to do work.
5. If we drop a 7.5 Kg object from a height of 3 m onto a lever in such a way that it launches a 5.5 kg. object on the other side upwards, would this object be able to reach a height of 4m? You might want to use the visual .
6. In a movement, some or all of the following types of energy and work are involved:
7. The power of a hoist is defined as:
8. The mechanical energy of a freely falling object is the difference between its potential energy and its kinetic energy.
9. To lift an object of 100 kg. at a speed of 6 m/s to a height of 4 m, the power of the machine must be at least 5.9 Kw and the work done by the crane is 3.9 kJ.
