A toy hover craft with mass 12 kg speeds along a track and crashes into a safety spring with spring constant 146 N/m, compressing it a distance of 0.92 m. Determine the speed of the hover craft just before it makes contact with the safety spring. (Ignore friction)

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

there are no components of a physical goal mentioned on the list of choices that you've provided.