Simplified P3 - Falling Safely, Energy of Games

Question 1

What does the size of air resistance force on a falling object depend upon?

Answer 1

• Cross sectional area, the larger the area the greater the air resistance.
• Its speed, the faster it falls the greater the air resistance.

Question 2

In what circumstance what air resistance have a large effect on motion?

Answer 2

Air resistance only has a large effect on motion when only when it is large compared to the weight of the falling object.