5. A 20 kilogram crate is sliding 10 m/s when it hits a rough patch and slows to rest over a distance of 2 meters. How much force does friction apply to the crate?

the results is a decrease in air temperature with an increase of altitude.

explanation:

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

option number c is the right answer.

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