In a stunt, three people jump off a platform and fall 9.9 m ontoa large air bag. A fourth person at the other end of the air bag, the“flier,” is launched 17 m vertically into the air. Assume all fourpeople have a mass of 75 kg. (a) What fraction of the mechanical energy of the three jumpers is transferred to the mechanicalenergy of the flier? (b) What is the total momentum of the threejumpers just before they land on the air bag? Let upward be thepositive direction. (c) What is the momentum of the flier just afterlaunch? (d) Notice that momentum is not conserved during thisstunt, unless you include the Earth. What impulse is delivered tothe jumpers–flier system by the Earth at the instant of the launch?
In a stunt, three people jump off a platform and fall 9.9 m onto
a large air bag. A fourth person at the other end of the air bag, the
“flier,” is launched 17 m vertically into the air. Assume all four
people have a mass of 75 kg. (a) What fraction of the mechanical energy of the three jumpers is transferred to the mechanical
energy of the flier? (b) What is the total momentum of the three
jumpers just before they land on the air bag? Let upward be the
positive direction. (c) What is the momentum of the flier just after
launch? (d) Notice that momentum is not conserved during this
stunt, unless you include the Earth. What impulse is delivered to
the jumpers–flier system by the Earth at the instant of the launch?
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 6 images
