Projectile problem without theta or time

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pwoolson
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shooting a cannon so that it explodes 10m off the ground above a target. The distance of the target is 1000m. Cannon is shot with a velocity of 10 m/s. Solve a) for θ and b)time in the air



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The Attempt at a Solution

 
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I guess you are forgetting something...

The Attempt at a Solution

 
Comment:

A projectile that is fired from the ground with an initial velocity of 10 m/sec will not travel 1000 m. Something is wrong with the problem statement.