How fast must a 2.5-g ping-pong ball move in order to have the same kinetic energy as a 145 g baseball moving at 38.0 m/s?

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m

Contains chemical energy. a. heat b. light c. natural gas

What describes the formation of horizon b? a. forms at the surface b. features parent material c. undergoes the most change d. forms due to decomposed material i think the answer is c. undergoes the most change