inclined plane frictionless motion help, Physics

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A block initial located 3m up a frictionless inclined plane is given an initial velocity of 6m/s up the ramp. The plane is 10m long and titled by 30 degree.
a) How long does it take for the block fall all the way down to the bottom of the ramp?
b) What is the block''s velocity when it reaches the bottom of the ramp?

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