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(11a) An airplane travelling 69.0 m/s at 29.5° below the horizontal when it drops off a...

(11a) An airplane travelling 69.0 m/s at 29.5° below the horizontal when it drops off a package. If the horizontal distance between the point of release and the point at which the package hit the ground is 685.0 m, how long was the package in the air?

(11b) How high was the plane when it dropped the package?

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