A crate is sliding down an inclined ramp at a constant speed of 0.55 m/s. The vector sum of all the forces acting on this crate must point

A) down the ramp.
B) up the ramp.
C) vertically downward.
D) perpendicular to the ramp.
E) None of the above choices is correct.


E

Physics & Space Science

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Why is the nucleosynthesis era so important in determining the chemical composition of the universe?

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