Solve.A baseball pitcher throws a baseball with an initial speed of 138 feet per second at an angle of 20° to the horizontal. The ball leaves the pitcher's hand at a height of 5 feet. Find parametric equations that describe the motion of the ball as a function of time. How long is the ball in the air? When is the ball at its maximum height? What is the maximum height of the ball?
A. x = 129.68t and y = -16t2 + 47.2t + 5
2.84 sec, 1.475 sec,
4.998 feet
B. x = 129.68t and y = -16t2 + 47.2t + 5
5.68 sec, 1.475 sec,
283.48 feet
C. x = 129.68t and y = -16t2 + 47.2t + 5
6.105 sec, 1.475 sec,
34.81 feet
D. x = 129.68t and y = -16t2 + 47.2t + 5
3.052 sec, 1.475 sec,
39.81 feet
Answer: D
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