Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. What is happening when is work done on an object?
   • When a Force causes an object to move through a distance work is done on the object.
2. When does a force do work on an object?
   • A Force does work on an object when the Force causes a displacement of the object.
3. What is one joule of work done equal to?
   • One joule of work is done when a Force of one newton causes a displacement of one metre. 1 joule = 1 newton-metre
4. How many joules are in 76 Nm?
   • 1 joule = 1 newton-metre so 76 joules is equal to 76 Nm.
5. What equation is used to calculate work done by a force on an object? Include SI units.
   • (MS) The work done by a Force on an object can be calculated using the equation: work done = Force ? distance moved along the line of action of the Force W = F s work done, W, in joules, J Force, F, in newtons, N distance, s, in metres, m
6. What is the energy transfer that occurs when work is done?
   • Work done and Energy transferred are measured in joules (J). The work done on an object can be calculated if the Force and distance moved are known. A change in momentum happens when a Force is applied to an object that is moving or is able to move.
7. When work is done against the frictional forces acting on an object what happens to the temperature of the object?
   • Work done against the frictional Forces acting on an object causes a rise in the temperature of the object.