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A cannonball is fired at a tower with an initial speed of 50.0 m/s and at...

A cannonball is fired at a tower with an initial speed of 50.0 m/s and at an initial angle of 20.0° above the horizontal. If the tower is a horizontal distance of 150 m away from the cannon, how long does it take for the cannonball to hit the tower? The effects of air resistance in this situation are negligible.

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