Pls help if ur good at physics!!

will give brainliest

Fill in the blank. the number of each type of element in the compound (other than 1) is represented by a small number to the right of the element symbol.

An object is dropped from a tower, 400 ft above the ground. the object's height above ground t seconds after the fall is s(t)equals400 minus 16 t squared. determine the velocity and acceleration of the object the moment it reaches the ground. the velocity of the object the moment it reaches the ground is nothing ft/s.

Which articulations allow for greatest range of motion?