What is Projectile Kinetic Energy?

AI Thread Summary
Projectile kinetic energy involves calculating the energy of an object in motion, particularly at its maximum height. The discussion highlights the importance of considering kinetic energy even when the object is at its peak. It clarifies that for a projectile launched straight up, the correct height to use in calculations is 8.2m, not 12.9m. The final velocity is confirmed to be 47.6 m/s. Understanding both vertical and horizontal components is essential for accurate calculations in projectile motion.
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The ball has some kinetic energy at it's maximum height which you've neglected.

Edit:
I said you would be right if it was launched straight up, but that's not true. Sorry, I'm tired.
(If it was launched straight up you would use 8.2m for "h" not 12.9m)
 
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v=47.6 m/s
Is that the right answer?
calculate vertical component and horizontal component separately.
 
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ASHU said:
v=47.6 m/s
Is that the right answer?

Yes.
 

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