My question is:  A student fires a cannonball diagonally with a speed of 24.0m/s from a height of 43.0m as shown. Neglect drag. Determine all unknowns and answer the following questions.   I found that the ball rose for 2.3 seconds, its maximum height is 68.9, the ball remained in the air for an overall time of 6.05 seconds, and finally, it landed 49.6 meters from the base of the building. How fast the ball was moving when it struck the ground, and how do I find

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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My question is: 

A student fires a cannonball diagonally with a speed of 24.0m/s from a height of 43.0m as shown. Neglect drag. Determine all unknowns and answer the following questions.
 
I found that the ball rose for 2.3 seconds, its maximum height is 68.9, the ball remained in the air for an overall time of 6.05 seconds, and finally, it landed 49.6 meters from the base of the building. How fast the ball was moving when it struck the ground, and how do I find what horizontal angle it landed at? Can you also tell me the process of getting those two answers? Thank you!
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