Physics, 01.08.2019 01:30 annyork03

Asoccer ball is kicked from the ground, and its height in meters above ground is modeled by the function h(t) = -4.9t2 + 19.6t, where t represents the time in seconds after the ball is kicked. how long is the ball in the air?

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Asoccer ball is kicked from the ground, and its height in meters above ground is modeled by the func...