Question

Problem 12.90 11 of 13 > Assume the ball is caught at the same clovation from which it is thrown (Figure 1) Part A Select the correct equations showing that the girl at A can throw the ball to the boy at B by launching it at equal angles measured up or down from a 45° inclination For the ball R (A Cost and t o where is the initial speed of the ball, t is the time of flight from A to B is the angle at which the ballis thrown, and R is the range. Thus, R- sin cos 0 - sin Since the function y-sinis symmetric with respect to 0 = 45° the girl can throw the ball at equal angles measured up or down from this inclination Figure < 1 of 1 > For the ball R VA cost and t o where is the initial speed of the ball t is the time of flight from A to B is the angle at which the ballis thrown, and Ris the range. Thus, R- sin cos8 - "sin. Since the function y-sinis symmetric with respect to 0 = 45°, the girl can throw the ball at equal angles measured up or down from this inclination For the ball R (VACOS)t and t o where is the initial speed of the ball, t is the time of flight from A to B is the angle at which the ballis thrown, and Ris the range. Thus, R- sin cos sin 20. Since the function y-sin 20 is symmetric with respect to = 45°, the girl can throw the ball at equal angles measured up or down from this inclination For the ball R (VA cost and t o where is the initial speed of the ball, t is the time of flight from A to B is the angle at which the ballis thrown, and R is the range. Thus. R- sim cos sin 20. Since the function y-sin 20 is symmetric with respect to @ = 45°, the girl can throw the ball at equal angles measured up or down from this inclination Submit Request Answer

Answer 1

Analyning the Giuen notion in x y- is VASins VA VA LeS B h h R 2VA Sne tigur t time o Range CR)-VA Cos e).t VA CoSO 2VA in e -2VA Sin B.es y-Sin 20 option (D) is Correut Henu