You can calculate terminal velocity using the following equation provided by Science Buddies :
: Heavier objects require more drag to balance their weight, meaning they must fall faster to reach their terminal speed.
: As the object gets faster, the drag force grows until it exactly matches the weight of the object. Steady State : Once
: Falling through "thicker" fluids like water results in a lower terminal velocity than falling through "thin" air. Real-World Examples Terminal Velocity - an overview | ScienceDirect Topics
is the highest speed a falling object can reach as it moves through a fluid, such as air or water. It occurs when the downward force of gravity is perfectly balanced by the upward resistance of the fluid, known as drag . At this precise point, the object stops accelerating and continues to fall at a steady, constant speed. The Physics of Falling