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A cannon launched a cannon ball at 30 degrees off the ground, at 40 m/s. What...

A cannon launched a cannon ball at 30 degrees off the ground, at 40 m/s. What is the speed of the cannon ball 1) at 3.2 seconds, and 2) when it hits the ground? (Find vertical and horizontal velocity components first).

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Answer #1

Concept - The horizontal component of velocity will be constant throughout the motion. Find the vertical component of motion after the given time using the initial vertical component of velocity and the acceleration due to gravity. Use the two components to find the resultant speed as shown below

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