Mathematics, 23.01.2020 20:31, diamond2738
Abaseball leaves the hand of a pitcher 6 vertical feet above home plate and 60 feet from home plate. assume the x-axis is a straight on the flat ground from mound to the plate, the y-axis lies on the groundfrom the 3rd to 1st base and the z axis is vertical height.
(a) in the absence of all forces except gravity, assume that a pitch is thrown with an initial velocity of 130i +0j-3k ft/s (roughly 90mi/hr). how far above the ground is the ball when it cross the home plate.
(b) how long does it take for the pitch to arrive at home plate?
(c) what vertical velocity component should the pitcher use so that the pitch crosses home plate exactly 3 feet above the ground?
(d) a simple model to describe the curve of the baseball assumes that the spin of the ball produces a constant acceleration (in the y direction) of c ft/s^(2). assume a pitcher throws a curve ball with c=8ft/s^(2) (1/4 the acceleration of gravity). how far does the ball move inthe y-directionby the time it reaches home plate, assuming an initial velocity of 130i +0j -3k ft/s ?
(e) using the above information, does the ball curve more in the first half of its trip to second or in the second half?
(f) how does this effect better?
(g) suppose the pitcher releases the ball from an initial position of < 0,-3,6> with an initial velocity of 130i +0j-3k. what value of the spin parameter c is needed to put the ball over home plater passing through the point < 60,0,3> ?
Answers: 3
Mathematics, 21.06.2019 13:00, wolfking800
Aright triangle includes one angle that measures 30º. what is the measure of the third angle? a. 30º b. 90º c. 60º d. 130º
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The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'
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Abaseball leaves the hand of a pitcher 6 vertical feet above home plate and 60 feet from home plate....
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