I only need help with part d. A ball is thrown with initial speed v0 up an inclined plane. The plane is inclined at an angle φ above the horizontal, and the ball is launched at an angle α > φ above the horizontal. (a) How much time does it take for the ball to land? (b) How far up the hill will the ball land? (c) For what angle α will the range from part (b) be a maximum? (d) What is the maximum range?

I only need help with part d. A ball is thrown with initial speed v0 up an inclined plane. The plane is inclined at an angle φ above the horizontal, and the ball is launched at an angle α > φ above the horizontal. (a) How much time does it take for the ball to land? (b) How far up the hill will the ball land? (c) For what angle α will the range from part (b) be a maximum? (d) What is the maximum range?

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