# Physics

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A soccer ball is kicked with a speed of 9.80 m/s at an angle of 25.0 degrees above the horizontal. If the ball lands at the same level from which it was kicked, how long was it in the air?

• Physics -

figure the vertical velocity, then knowing the final and initial heights, solve for time in air.

• Physics -

Twice the time that it takes the vertical velocity component (9.80 sin 25, m/s) to become zero. The same time is required to go up as come back down. Hence the factor of two.

• Physics -

lihokl

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