List several examples of drag, elastic force, and tension force that you’ve observed in your life.

d.7.5cm is your answer

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19

the answer to this is proletariats.

hope this : )