Basic Biomechanics 6th Edition by Susan Hall

Exercise 3

A football player is contacted by two tacklers simultaneously. Tackler A exerts a force of 400 N and tackler B exerts a force of 375 N. If the forces are coplanar and directed perpendicular to one another, what is the magnitude and direction of the resultant force acting on the player (548 N at an angle of 43 ° to the line of action of tackler A)