Question

:A multistorey building has 25 floors above

the ground level each of height 5m. It also has 3

floors in the basement each of height 5m. A lift

in building moves at a rate of 1m/s. If a man

starts from 50m above the ground, how long will

it take him to reach at 2nd floor of basement​

Answer 1

Answer:

60 seconds

Step-by-step explanation:

height above the ground = 50 m

to reach : -

basement at level -2

therefore,

total distance to be covered = 60 m ( 50 m + 10 m )

speed = 1m/s

speed = distance

______

time

1 m/s = 60 m / time

time = 60 m / 1m/s

time = 60 seconds