An astronaut in a spacecraft looks out her window and observes a comet travel in the opposite direction at a relative speed of 237 m/s. the velocity of the spacecraft is 114 m/s directly away from the sun. what is the comet's velocity relative to the sun? assume that motion away from the sun is in the positive direction.

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

d. platinum would have the greatest temperature increase because it has the lowest specific heat.