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answerhappygod
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Emmy kicks a soccer ball up at an angle of 45° over a level field. She watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. Assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. Consider only the time that the ball is in the air, after being kicked but before landing. Take "north" and "up" as the positive x- and y-directions, respectively, and use g = 10 m/s² for the downward acceleration due to gravity. Vertical velocity Horizontal velocity 15 15 10 1.0 1.0 v (m/s) 10 5 -5 -10 -15 0.0 0.5 t(s) 1.5 2.0 (STI) 5 0 -5 -10 -15 0.0 0.5 1.5 2.0
Emmy kicks a soccer ball up at an angle of 45° over a level field. She watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. Assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. Consider only the time that the ball is in the air, after being kicked but before landing. Take "north" and "up" as the positive x- and y-directions, respectively, and use g = 10 m/s² for the downward acceleration due to gravity. Vertical velocity Horizontal velocity 15 15 10 1.0 1.0 v (m/s) 10 5 -5 -10 -15 0.0 0.5 t(s) 1.5 2.0 (STI) 5 0 -5 -10 -15 0.0 0.5 1.5 2.0