Forces Spotlight Science 8 - 14a/b
Ask Khang what a resultant force is!
Khang will answer for you.
What are the two force that fights against you when you run? (Hint: the answer is not 'a wall'.)
Friction and air resistance/wind resistance.
Why don't we fall through the Earth? (Use 'balanced force' in your answer.)
Your weight and the upthrust are equal so there is a balanced force.