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17 March, 06:32

During soccer practice, Maya kicked a soccer ball 37° off the ground at 25 m/s. What was the ball's speed 2.2 s after she kicked it?

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  1. 17 March, 06:43
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    Answer

    3.44 m/s

    Explanation

    The motion apply the equations of Newton's law of motion. The ball is acceleration is - 9.8 m/s² (acceleration due to gravity. It is negative because the ball is going against gravity, so it is decelerating).

    The first equation of Newton's law of motion is;

    V = U + at

    Where V is the final velocity, U is the initial velocity, a is acceleration and t the time taken.

    V = 25 + (-9.8 * 2.2)

    = 25 - 21.56

    = 3.44 m/s
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