Q1. Tarzan (m = 75 kg) tries to cross a river by swinging from an 11.0 m long vine. His speed at the bottom of the swing, just as he clears the water, is 5.0 m/s. Tarzan doesn't know that the vine has the breaking strength of 1.0 103 N. What is the total force Tarzan excretes on the vine?
Q2. A fully loaded station wagon has a mass of 1690 kg. If each of its four tires is inflated to a gauge pressure of 211 kPa, what is the total tire area in contact with road?