Recent content by bay

I'm struggling in my intro physics classe because I cannot bring myself to participate in class discussions or seek help from others when I'm confused. I was afraid of looking stupid by saying something wrong in class and looking incompetent by asking for help. This "strategy" has blown up in my...

How does the h cancel out?

If an object is dropped from height, h, then gravitational energy is E = mgh, but kinetic energy when object hits the ground is E=(1/2)mv^2. Conservation of energy states that E(g)=E(k). Why does kinetic energy not depend on height object was dropped?