A raindrop reaching the ground with terminal velocity has momentum p. Another drop of twice the radius, also reaching the ground with terminal velocity, will have momentum :

Two rain drops reach the earth with their terminal velocities in the ratio 4 : 9. Find the ratio of their radii .

Twenty seven similar mercury drops are falling through water with terminal velocity 4 cm/s. If the drops combine to form a single drop, then terminal velocity of this bigger drop in water will be

Two rain drops reach the earth with different terminal velocities having ratio 9:4 . Then , the ratio of their volumes is

A spherical ball falls through viscous medium with terminal velocity v . If this ball is replaced by another ball of the same mass but half the radius, then the terminal velocity will be (neglect the effect of buoyancy.)

The ratio of the terminal velocities of two drops of radii R and R//2 is

Six small raindrops each of radius 1.5 mm, come down with a terminal velocity of 6 cm s^(-1) . They coalesce to form a bigger drop. What is the terminal velocity of the bigger drop?

An aeroplane is moving with a velocity u. It drops a packet from a height h. The time t taken by the packet in reaching the ground will be

Eight rain drops of radius 1mm each falling downwards with a terminal velocity of 5 cm s^(-1) collapse to form a bigger drop. Find the terminal velocity of bigger drop.

Eight drops of water, each of radius 2mm are falling through air at a terminal velcity of 8cms^-1 . If they coalesce to form a single drop, then the terminal velocity of combined drop will be

If n identical water droplets falling under gravity with terminal velocity v coalesce to form single drop which has the terminal velocity 4v. Find the number n .