Question

A multistory 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 1 m/s. If a man starts from 50 m above the ground, how long will it take him to reach at 2nd floor of basement?

please answer it

Answer 1

Answer:

5 seconds

Step-by-step explanation:

Basement = 3 floors

above basement = 25 floors

therefore 25 + 3 = 28 total floors

according to the question

Height = 5m

from ground means from 3rd floor to 13th floor, 5x10 = 50m

and therefore 3 + 10 = 13th floor

therefore speed of lift = 1m/s

1×12= 12m/s

now 12 meters per one second

from 13th floor to 2nd floor it is 60m

therefore 60/12 = 5 seconds

Answer 2

Answer:

hi army

Step-by-step explanation:

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