A.
Calculate how much you weigh while sitting on a chair in the classroom!
B.
How is it possible to achieve temporary weightlessness while on Earth?

C.
Calculate how much 1) a car weighing 800 kg weighs on Earth; 2) cosmonaut, who
mass 70 kg, on Earth; 3) a cosmonaut weighing 70 kg on the Moon; 4) apple, which
mass 0.2 kg, on Jupiter; 5) a cosmonaut with a mass of 70 kg on a neutron star!



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