Question

water droplets fall from a ceiling of height 5m at regular interval of 0.2sec what is the speed of the third drop when the first drop hits the ground (g=10m/s)​

Answer 1

Answer:

given =  height =5m

             time = 0.2 sec

to find =  speed of third drop when 1st drop hits the ground.

solution,

s= 1/2 gt²

5 = 1/2 X  10 X t²

T = 1 sec

the time interval is 1/2 sc

it means every half of the second the drop will released.

we have to find time when 3rd drop is released,

s =  1/2gt² X t²

s = 1/2 X 10 X 1/ 4

s = 5/4

s = 1.25 m