Two billion people jump up in the air at the same time with an average velocity of 7.0 m/s. If the mass of an average person is 60 kilograms and the mass of Earth is [tex]$5.98 \times 10^{24}$[/tex] kilograms:
a. What is the total momentum of the two billion people?
b. What is the effect of their action on Earth?
Answer (2)
The total momentum of the two billion people is 840 billion kg·m/s. The effect of their action on Earth is minimal. ;
The total momentum of the two billion people jumping is 840 billion kg·m/s. The effect of their action on Earth is extremely small due to its massive size, making any velocity change negligible. Thus, while they do impart some momentum to the Earth, it is not measurable in practical terms.
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