Today, a football team in possession of the ball has four pl…
Questions
Tоdаy, а fооtbаll team in possession of the ball has four plays to make a ten-yard first down, but during the late 1800s and early 1900s, the offensive team had three plays to make a five-yard first down, and passing was severely restricted, both by the rules and by tradition. 2As a result, coaches emphasized "mass plays," which directed the maximum amount of force against a single isolated player. 3In the most notorious of these plays, the flying wedge, players grouped themselves into a V formation and started running before the ball was put into play. 4At the last moment, after the ball had been passed to a player within the wall of the wedge, the densely packed runners crashed into their stationary opponent as one massive force. 5However, protective equipment was crude at the time: players often played without helmets, and helmets did not have facemasks. 6As a result, this use of massed brute force injured hundreds of players a year. 7 As if such plays were not treacherous enough, referees back then rarely enforced rules against slugging, kicking, and piling on. 'In fact. during just one season in 1909, such allowances resulted in 30 deaths and 216 serious injuries. 8Victory was the supreme object, and any method seemed justified in pursuit of that goal. Which statement is the author’s main idea? Football was a dangerous sport during the late 1800s and early 1900s. Schools should enforce strict safety measures with their football teams. They flying wedge is a brutal and dangerous football play that often leads to injury. During the late 1800s and early 1900, no one was concerned about the safety of football players. A and B A and D
Cоnsider а Cibа 913 epоxy mаtrix with T300 carbоn fiber reinforcement. Calculate the longitudinal and transverse stiffness of the lamina. Young's modulus of matrix Em=3.39 GPa, Young's modulus of fiber Ef = 230 GPa and fiber volume fraction νf = 0.64