Physics, 25.09.2019 20:20, tangia

Asoccer ball is kicked straight upwards with an initial vertical speed of 8.0 m/s. we can ignore air resistance. how long does it take the ball to have a downwards speed of 4.0 m/s?

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Asoccer ball is kicked straight upwards with an initial vertical speed of 8.0 m/s. we can ignore air...