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## Homework Statement

a 10m long glider with mass of 680kg (including the passengers) is gliding horizontally through the air at 30 m/s when a 60 kg skydiver drops out my releasing his grip on the glider. What is the glider's velocity after the skydiver lets go?

## Homework Equations

[tex]\vec{P}[/tex]

_{i}= [tex]\vec{P}[/tex]

_{f}

m

_{g}[tex]\vec{v}[/tex]

_{i}+ m

_{d}[tex]\vec{v}[/tex]

_{i}= m

_{g}[tex]\vec{v}[/tex]

_{f}+ m

_{d}[tex]\vec{v}[/tex]

_{f}

## The Attempt at a Solution

for the initial momentum part of the equation, would i have to subtract the mass of the diver from the mass of the glider - since the glider already includes his mass? and in the final momentum, subtract it there as well because he is no longer attached?

Would it kind of be like a rocket shooting off question where the rocket is loosing weight?