KE of a free-falling object just before it hits the ground is equal to at the height from which it was dropped.

What are igneous intrusions and extrusions

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

Why does lightning travel from clouds to the ground?