Homework Answers
given that
austronaut mass m1 = 80 kg
mass of oxygen tank m2 = 10 kg
initial momentum is zero
there is no initial momentum or velocity
final momentum pf = m2v2+m1v1
80*v2 = -10*2
v2 = -20/80 = -0.25 m/s
final momentum also zero
because momentum is conserved
so change in momentum = 0
chart: initiao momentum = 0 change in momentum = 0 final momentum = 0
c) final speed v = 0.25 m/s
the negative sign indicates the astronaut motion is opposite to the oxygen tan motion
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