Does rain fall at a constant speed?
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.
Why do rain drops fall slowly?
Answer: 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. … Once the size of a raindrop gets too large, it will eventually break apart in the atmosphere back into smaller drops.
Does rain hit terminal velocity?
Every object falling through the atmosphere, from skydivers to hailstones, has a terminal velocity. Raindrops larger across than 0.5 millimeter (0.02 inch) fall with a terminal velocity of several meters (feet) per second. Smaller drops fall more slowly — less than 1 meter (3.3 feet) per second.
What is the speed of rain drops per hour?
In general, depending upon their size, raindrops fall between 15 and 25 miles per hour no matter how high they are when they begin their descent.
What is the fastest recorded raindrop?
The droplets in a light shower are 100 times larger and fall at 6.5m/s or about 22.5km/h (14mph). The largest possible raindrops are 5mm across and hit the ground at 32km/h (20mph).
How long does it take for a raindrop to reach terminal velocity?
In still air, the terminal speed of a raindrop is an increasing function of the size of the drop, reaching a maximum of about 10 meters per second (20 knots) for the largest drops. To reach the ground from, say, 4000 meters up, such a raindrop will take at least 400 seconds, or about seven minutes.
Why do raindrops not hurt us?
When you drop something in air, it does not accelerate forever. … This is known as air resistance or drag. As the object gains velocity there comes a time when the force of the air resistance is enough to balance the force of gravity, so the acceleration stops and the raindrop attains terminal velocity.
What falls faster rain or snow?
Rain falls faster and has a sound upon impact with the ground or another surface, making it a much louder form of precipitation. Unlike rain, snowflakes have open space in their six-sided crystalline structure.
Do all the rain drops reach the Earth with the same speed?
It is impossible, in such a framework, to have drops of vastly different sizes moving at the same speed. However, large drops eventually break up, either because they become hydrodynamically unstable or as a result of temporary coalescence produced after a collision [Pruppacher and Klett, 1997].