Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. What is a force?
   • Forces can be either pushes or pulls, which can be combined to form a twist.
2. What do we use force arrows for? How do we draw them?
   • Force arrows in free body diagrams are used to show the direction of Forces and the size of the Force by its length or label. Force arrows have a solid arrow head.
3. What do we measure forces in? What symbol can we use?
   • Forces are measured in newtons with the symbol 'N'.
4. What is one Newton equivalent to?
   • A newton is the weight of a small apple.
5. What happens if forces are combined?
   • Forces can be combined to help or cancel each other.
6. How do we calculate whether forces are balanced or unbalanced? How can we tell if a force is negative? What is the 'resultant force'?
   • Adding Forces in 1 dimension, allows to calculate whether Forces are balanced or unbalanced. Forces in the a backwards direction are considered negative. The combined Force is is called the 'Resultant Force' and is the result of adding all the Forces together.