A ball is kicked upward from the ground, with an initial velocity of 39 meters per second, at an angle of 64° with respect to the horizontal. The horizontal distance x from the starting point and the height y above the ground of the ball t seconds after it is kicked are given by the parametric equations below. x= = (vo cos 0) t y=-4.91²+ ·(vo sin 0)t + Here is the initial velocity, is the initial angle with respect to the horizontal, and h is the initial height. Use the equations to answer the following questions. (a) How long is the ball in the air before it first touches the ground? Do not round any intermediate computations. Round your answer to the nearest hundredth. seconds
A ball is kicked upward from the ground, with an initial velocity of 39 meters per second, at an angle of 64° with respect to the horizontal. The horizontal distance x from the starting point and the height y above the ground of the ball t seconds after it is kicked are given by the parametric equations below. x= = (vo cos 0) t y=-4.91²+ ·(vo sin 0)t + Here is the initial velocity, is the initial angle with respect to the horizontal, and h is the initial height. Use the equations to answer the following questions. (a) How long is the ball in the air before it first touches the ground? Do not round any intermediate computations. Round your answer to the nearest hundredth. seconds
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