A ball thrown vertically upward reaches a maximum height of 80 meters above the surface of Earth. At its maximum height, the speed of the ball is

A) 9.8m/s
B) 3.1 m/s
C) 0m/s
D) 24 m/s

Apositive rod is placed to the left of sphere a, and the spheres are separated. which best describes the spheres? sphere a is negative and sphere b is positive because protons from sphere a are attracted to the rod and move to sphere b. sphere a is negative and sphere b is positive because electrons from sphere b are attracted to the rod and move to sphere a. sphere a is positive and sphere b is negative because electrons from the rod move to sphere b and protons then move to sphere a. sphere a is positive and sphere b is negative because protons move from sphere b to the rod and also to sphere a.

True or false: the revolution of the earth creates day and night as it rotates around the sun

Energy flows from the producer level to the level. is called