Arectangular solid (with a square base) has a surface area of 73.5 square centimeters. find the dimensions that will result in a solid with maximum volume.

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

powerful computers now, not then

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )