Recent content by rqu1ntana

The problem is that its for a test and i just want to be sure what i did was right. This is what i did, I used the formula Vf2=Vi2-2g(y-yi), where Vi2 is the initial velocity, g is gravity=9.8, y is 0, and yi is the height. from all the data given this is what it looks like...

A steel ball is launched at 25 degrees above horizontal from the top of a platform that is 15 meters above ground. If the initial speed is 10m/sec, what is the final speed when it strikes the ground?