What do free body diagrams show?

What forces act on a skydiver?

What do the size of the arrows show?

What does the direction of the arrow show?

What is a resultant force?

What happens if you have a number of forces acting at a single point?

What is this single force called?

How to calculate the resultant force?

What happens if a resultant force moves an object?

What happens when a force moves an object through a distance?

How do you keep something moving if there are frictional forces?

What does the thing applying the force need?

Why does the force do 'work'?

When is work done?

When are you doing work against frictional forces?

How is energy being transferred?

What does this cause the overall temperature of the object to do?

Equation:

How to convert joules to newton metres?

What is terminal velocity?