Coulomb’s law relates which of the following? the force between two masses and the distances separating them. the force of a magnetic field on a beam of electrons. the force between two charges and the distance separating them. the force and acceleration of a mass.

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

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