The net force on a rock that weighs 2 n when you hold it at rest above your head is?

Coal contains energy. a. light b. kinetic c. chemical d. mechanical

What surface does the epithelial tissue cover? a. the surface of the body b. lines internal organs c. forms many glands d. all of the above

Tara goes on a camel safari in africa. she travels 5 km north, then 3 km east and then 1 km north again. what distance did she cover? what was her displacement?