Se usa una bombona de He para inflar globos, de volumen 15L con una presión de 200 atm. Si los globos tienen un volumen de 1.5L
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Let <em>v</em> denote the initial speed of the ball. The ball's position at time <em>t</em> is given by the vector
where <em>g</em> is the acceleration due to gravity with magnitude 9.80 m/s^2.
The ball reaches the goal 13 m away at time <em>t</em> such that
at which point it attains a height of 2.44 m, so that