Why rain drops falling from a large height reaches Earth with a moderate velocity?

The force due to air resistance increases with the speed of the rain drops until it balances the gravitational force.

How do you calculate rain drop velocity?

Use the terminal velocity formula, v = the square root of ((2*m*g)/(ρ*A*C)). m = mass of the falling object. g = the acceleration due to gravity. ρ = the density of the fluid the object is falling through.

Why rain drops attain constant velocity when it falls through air?

Rain drop falls with a constant velocity because the weight(which is the force of gravity acting on body) of the drop is balanced by the sum of the buoyant force and force due to friction(or viscosity )of air. Thus the net force on the drop is zero so it falls down with a constant velocity.

What is the velocity of rain drops?

When all the parameters are considered the terminal velocity of a typical raindrop is calculated to be about 9 meters per second or 20 mph. A smaller raindrop of radius 0.15 cm has a terminal velocity of about 7 meters per second or 16 mph.

Why do drops of rain fall down chemistry?

Raindrops, along with all things that fall, drop to the Earth because of gravity. Only then do the raindrops succumb to gravity and fall out of clouds. The process during which water transforms to rain and falls is known collectively as the hydrologic cycle.

Why do rain drops fall under gravity?

When a rain drop falls under gravity throght a viscous medium (say air) a viscous drag acts on it in a direction opposite to that of motion. At this stage, there is no net force to ac celerate rain drop. Hence the rain drop starts moving with uniform velocity .

What is terminal velocity Class 11?

Terminal velocity is defined as the highest velocity attained by a body that is falling through a fluid. It is observed when the sum of drag force and buoyant force becomes equal to the downward gravitational force that is acting on the body.

Does rain drop with constant velocity?

As gravity increases the speed of the raindrop in its descent, drag retards the downward acceleration of the raindrop. At this point, a raindrop experiences no further acceleration and therefore falls at a constant velocity.

Why do rain drops not acquire too much velocity considering they fall from a great height?

Ac cording to Stoke’s law, this viscous drag goes on increasing with the increasing velocity of the drop till a stage comes when the total downward force on the drop is just balanced by the upwards viscous drag. …

How does rain drop fall?

High in the atmosphere , water collects on dust and smoke particles in clouds. Raindrops start to form in a roughly spherical structure due to the surface tension of water. The reason is due to their speed falling through the atmosphere. Air flow on the bottom of the water drop is greater than the airflow at the top.

What is maximum velocity speed?

Terminal velocity is the maximum velocity (speed) attainable by an object as it falls through a fluid (air is the most common example). It occurs when the sum of the drag force (Fd) and the buoyancy is equal to the downward force of gravity (FG) acting on the object.