Must new substance be formed when you observe property

When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.

If a balloon is taken outside on a very cold day, what will occur?

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg