200 150 100 50 -100 4 6 8 10 12 Time after launch (sec) Velocity (ft/sec) 2.
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When a model rocket is launched, the propellant
burns for a few seconds, accelerating the rocket upward.
After burnout, the rocket coasts upward for a while and then begins
to fall. A small explosive charge pops out a parachute shortly after
the rocket starts down. The parachute slows the rocket to keep it
from breaking when it lands. When did the rocket reach its highest point? What was its
velocity then?
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