What is the terminal speed of a 75 kg man that jumps out of a plane feet first? The man can be thought of as a rectangular box with dimensions 20 cm * 40 cm * 1.8 m I tried equation v terminal = sq rt (4mg/p* area). P=1.22 I used . 72 as Area. That's wrong. Help please! I calculated eq using .72 but that is wrong. Help!