<span> The </span>rate<span> of </span>pressure decreases with an increase in altitude<span> is not </span>constant<span>. Rather, </span>pressure decreases<span> rapidly near Earth's surface and more gradually at greater heights. </span>
Matter<span> doesn't </span><span>disappear </span>
We can utilize the equation pi=pf (p=momentum). because p=mv, we can sub in the initial masses and velocities as well as the finals in order to form an equation. this results in 120(4)+100(3)=120(2)+100x. this can be simplified to 540=100x, or x=5.4 m/s.
