It is a common observation that rain clouds can be at about a kilometer altitude above the ground.
If a rain drop falls from such a height freely under gravity, what will be its speed? Also calculate in km/h. `(G = 10 m//s^2)`.

It is a common observation that rain clouds can be at about a kilometer altitude above the ground. If the diameter of the rain drop is 4mm then Estimate the time required to flatten the drop.

It is a common observation that rain clouds can be at about a kilometer altitude above the ground. Rate of change of momentum is force. Estimate how much force such a drop would exert on you.

It is a common observation that rain clouds can be at about a kilometer altitude above the ground. Estimate the order of magnitude force on umbrella. Typical lateral separation between two rain drops is 5 cm. ( g = 10 m / s^2 and diameter of drop = 4mm)

It is a common observation that rain clouds can be at about a kilometer altitude above the ground. A typical rain drop is about 4 mm diameter. Momentum is mass xx speed in magnitude. Estimate its momentum when it hits the ground.

A rain drop of mass 1.00 g falling from a height of 1 km hits the ground with a speed of 50 ms^-1 . Calculate. the gain in K.E. of the drop.

An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy ? If the object is allowed to fall, find its kinetic energy when it is half-way down. Take g = 10 ms ^-2 .

A rain drop of radius 2 mm falls from a height of 500 nr above the ground. It falls with decreasing acceleration (due to viscous resistance of the air) until at half its original height, it attains its maximum (terminal) speed, and moves with uniform speed thereafter. What is the work done by the gravitational force on the drop in the first and second half of its journey ? What is the work done by the resistive force in the entire journey if its speed on reaching the ground is 10 m s^-1 ?

A car falls off a ledge and drops to ground in 0.5s. Let g = 10 ms^-2 What is its speed on striking the ground?

It is well known that a rain drop falls under the influence of the downward gravitational force and the opposing resistive force. The latter is known to be proportional to the speed of the drop, but is otherwise undetermined. Consider a drop of mass 1.0g falling from a height of 1.00km. It hits the ground with a speed of 50.0ms^(-1) (b) What is the work done by the unknown resistive force ?