1. The problem statement, all variables and given/known data The motion of a human body through space can be precisely modeled as the motion of a particle at the body's center of mass. The components of the displacement of an athlete's center of mass from the beginning to the end of a certain jump are described by the two equations below, where t is the time at which the athlete lands after taking off at time t = 0. xf =0 + (11.1 m/s)(cos 20.3°)t 0.369 m = 0.812 m + (11.1 m/s)(sin 20.3°)t - 1/2(9.80 m/s2)t2 2. Relevant equations (a) Identify his position. ? meters ihat + ? meters jhat (b) Identify his vector velocity at the takeoff point. ? m/s at ? ° above horizontal (c) The world long jump record is 8.95 m. How far did the athlete in this problem jump? ? m 3. The attempt at a solution So, I drew out a diagram and it seemed to make sense to me but the answers were wrong. for a) i got you would just take the component vectors, so Vxi= (11.1 m/s)(cos 20.3) and Vyi= (11.1 m/s) (sin20.3). But that was wrong. I got b). and for c) i thot you could jus pick out the information and it would be .369 but then realized that is only in the y direction, but time isnt give, so how are we supposed to find the x_final?