A large cannon is fired from the top of the hill at an angle of 0...

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A large cannon is fired from the top of the hill at an angle of 0 above the horizontal. The muzzle speed is vi. Neglecting air resistance, answer the following questions (Use magnitude for g=10m/s): a) How long the projectile will travel before striking the ground, if it fired from the height of 200 m? b) what is vi, if the cannon ball landed 800 m away from the base of the hill? c) what is the final velocity of the cannon ball just before hitting the ground? A large cannon is fired from the top of the hill at an angle of 0 above the horizontal. The muzzle speed is vi. Neglecting air resistance, answer the following questions (Use magnitude for g=10m/s): a) How long the projectile will travel before striking the ground, if it fired from the height of 200 m? b) what is vi, if the cannon ball landed 800 m away from the base of the hill? c) what is the final velocity of the cannon ball just before hitting the ground?