A person on a bridge 25m above the water throws a rock straight downwards at 20m/s. a. How long does it take to hit the water?
B how fast is it going when it hits?

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.

Aregular polygon has angkes of size 150° each.how many side has the polygon

How to tell if a molecule is polar or nonpolar with electronegativity