A 1-kg wood ball and a 5-kg metal ball have identical shapes and sizes. They are dropped simultaneously from a tall tower. Each ball experiences the same drag force because both have the same shape.
1) Draw free body diagrams for each ball including air resistance.
2) If both balls have the same acceleration if they fellin a vacuum, the metal ball has a larger gravitational force but italso has a larger mass and so a=f/m is the same as it is for the wood ball. But the accelerations are not the same if the balls fall in the air. Which now has the larger acceleration?
3) Do the balls hit the ground simultaneously? If not which one does? Please explain why.