Thank you for taking the time to explain all the steps.
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since we are ignoring air resistance, the fact that the ball has a weight of 16 lbs is irrelevant.
You're welcome! I'm glad to hear that you found the explanations helpful.
Regarding the weight of the ball, when we ignore air resistance, the weight of an object doesn't affect its motion. This is because weight is actually the force of gravity acting on an object, and in the absence of other forces, all objects experience the same acceleration due to gravity (approximately 9.8 m/s² near the Earth's surface). So, whether the ball weighs 16 lbs or not, it will still experience the same acceleration and follow the same trajectory when thrown in a vacuum or when air resistance is ignored.
In calculations involving motion without air resistance, we typically focus on the initial velocity, angle of projection, and other relevant factors like the launch height or initial position. These values along with the laws of physics can be used to determine the motion of the ball accurately.