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No it does not, as a raindrop falls to earth it will gradually slow due to the changing terminal velocity. As a raindrop falls, water will evaporate from it causing the mass to decrease faster than the size and surface area. this will leave the raindrop with a higher surface area to mass ratio. Since air resistance is related to surface area and mass, the smaller raindrop will have more air resistance for its mass and will fall slower.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoIs zero. No change in velocity means no acceleration.
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What is acceleration of a rain drop that falls at a constant velocity?
If the velocity is constant then there is no acceleration. The acceleration is zero.
What is the reason for rain drops to fall with a constant speed by the time they reach earth?
They reach their terminal velocity.
Which fall faster big rain drop or small rain drop?
The viscosity of air provides a drag force on a raindrop and keeps it from falling with the acceleration of gravity. When a drop is falling (assuming it does not combine with other drops in the process) it will reach a terminal velocity which depends on its diameter. The larger the diameter the larger the terminal velocity. Specifically, the terminal velocity is proportional to the square root of the diameter of the drop. Big rain drops fall faster than small rain drops. See related links for details and equations.
What is the direction and magnitude of the net force acting on a rain drop falling down with constant speed?
If the raindrop is falling at a constant speed, then it has reached terminal velocity. This happens when the downward force (due to gravity) is the same as the upward force due to friction. As such the net force acting on the rain drop is 0.
Why a larger rain drop falls faster than a small rain drop?
Considering the rain droplets as spherical body. We have two forces acting on the rain drop when it is falling through the sky, namely the resistance force due to friction(drag force)upwards and its weight downwards. Th rain drop falling from such distance attain a terminal velocity while falling i.e their speed becomes constant after sometime. This happens when the drag force equals the weight of drop,, this happens because drag force increases with velocity of the drop. Drag force= .5*rho*v2*A(frontal area)*Cd(coefficient of drag) Weight=m*g=rho*volume of spherical drop=rho*4/3*r3. When we equalize it, we get the Terminal Velocity(v) varying directly as sqr of r(radius of drop) So larger drop means, larger terminal velocity and hence less time taken for falling. So larger rain drop falls faster.
What is the acceleration of a rain drop that falls at a constant velocity?
This is not a simple question and not enough information is provided to answer it. Among other things it depends upon the time it takes to reach terminal velocity and the terminal velocity depends on the various drag forces operating which in turn will depend on other variables such as initial height, wind speed, temperature, humidity, etc. You could calculate the velocity of any object falling in a vacuum if the acceleration due to gravitational force remains constant throughout the fall. v=v0+at where vo=initial velocity (probably zero if the object is initially at rest), a is the acceleration due to gravity (9.8m/s2) at or near the surface of the earth, and t is the time of fall.
Why doesn't rain fall in one big drop?
because
Why a raindrop falling vertically through still air reaches a constant velocity?
The air resistance will increase to the point where it counters the downward acceleration.
What is a word that can go in front of the words drop fall bow and cloud?
Rain.
Clouds are very high in the sky but the rain-drops falling from the clouds havelow velocities as they reach the ground.?
the reason why is because of the shape and weight if the rain drop. the weight of a rain drop is less than a gram and the shape of one when falling from the sky, has a lot of drag. this means that the terminal velocity of a rain drop is very slow
Why ordinary spring often flow intermittently?
Rain fall is not always constant. That's how they get there water
What is the magnitude of net force acting on a drop of rain falling down with a constant speed?
consider a sphere moving through a viscous medium the fluid layer in contact with the sphere is moving with same velocity but the layer far away is at rest. This makes a relative motion to be setup.viscous force acts on this drop.The backward force is proportional to the speed of the drop.at a stage the viscous force balances the downward force.hence the body moves with a constant velocity called terminal velocity.
