physics

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the coefficient of kinetic friction between the block and inclined plane is 0.28 and angle è = 65°. What is the block's acceleration (magnitude and direction) assuming the following conditions?

(a) It is sliding down the slope.
m/s2

(b) It has been given an upward shove and is still sliding up the slope.
m/s2

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    What is your thinking? I am getting the impression you are just grazing for answers.

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