The football player at A throws the ball in the y-z plane at a speed A = 47 ft/s and an angle A = 60° with the horizontal. At the instant the ball is thrown, the player is at B and is running with constant speed along the line BC in order to catch it. (Figure 1) Figure 30 ft B 20 ft 1 of 1 Part A Determine this speed, vg, so that the player makes the catch at the same elevation from which the ball was thrown. Express your answer to three significant figures and include the appropriate units. UB= Submit μA Value Provide Feedback Request Answer Units ? Next >

A football player releases a ball with the initial conditions shown in the figure. Determine the radius of curvature of the trajectory at times t = 0.8 sec and t = 1.9 sec, where t = 0 is the time of release from the quarterback's hand. For each case, compute the time rate of change of the speed. 2b = 67 ft/sec e= 39 Answers: For t = 0.8 sec, i ft, v = i ft/sec2 For t= 1.9 sec, p= i ft, v = i ft/sec?

The baseball player A hits the baseball at VA = 40 ft/s and  θA = 60° from the horizontal. When the ball is directly overhead of player B he begins to run under it. Determine the constant speed at which B must run and the distance d in order to make the catch at the same elevation at which the ball was hit.

A particle is launched from point A with a horizontal speed u and subsequently passes through a vertical opening of height b = 365 mm as shown. Determine the distance d which will allow the landing zone for the particle to also have a width b. Additionally, determine the range of u which will allow the projectile to pass through the vertical opening for this value of a d. KIIO Answers: d = i 36 ( i A u mm m/s) sus( i m/s)