Asked by Aria

A football was thrown from the line of scrimmage with a velocity of
30 m/s at an angle of 30o above the horizontal.

(a) Determine the time required by the ball to reach the maximum height of its flight path.

(b)Determine the distance from the line of scrimmage that a receiver must travel in order to catch the ball just before it hits the ground.
Answered by Henry
Vo = 30m/s @ 30 Deg



































Vo = 30m/s @ 30 Deg.
xo = hor = 30*cos30 = 26 m/s.
Yo = ver = 30*sin30 = 15 m/s.

a. Tr = (Y-Yo)/g.
Tr = (0-15) / 9.8 = 1.53 s. = Rise time
or time to reach max. ht.

b. D = Vo^2*sin(2A)/g.
D = 900*sin60 / 9.8 = 79.5 m.
Answered by Henry
post it.
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