An object whose mass is 3 kg is fired from a cannon, giving it a forward momentum of 1050 kg-m/sec. What is its velocity?

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as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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it was given as a lesson and guide for prayer.

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..