Q. A 650-N force acts in a northwesterly direction. A second 650-N force must be exerted in what direction so that the reultant of the two forces points westward? Illustrate your answer with a vector diagram.
Q. A rifle with a weight of 20 N fires a 4.0 g bullet with a speed of 240 m/s.
(a) Find the recoil speed of the rifle.
(b) If a 800 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle.