If someone is predisposed to a disease ,they are more likely to contract the disease do to

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

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