Every floor of a 12 storey building is 4m high. If a lift moves 2m every second, how long will it take to move from 2nd floor to 12th floor?
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total height = 12×4 = 48m
1 sec = 2m
for 10 floor =40m =20sec
1 sec = 2m
for 10 floor =40m =20sec
anki89:
sorry
i made a mistake
thanks miss lucy
it's all right
it happens
i just cant believe..!!
and thanx u made me understand!
i multiplied 40×2 ..but actually i have to do 40÷2
It's ok
hm
Answered by
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Height of one floor = 4 metres.
Speed of lift = 2m/s.
Speed = Distance / Time
Time = Distance / Speed
= 4 / 2
Time taken to reach one floor = 2 seconds
Distance from 2nd to 12th floor = 10 floor
= 10 × 4 = 40 metres.
Time taken from 2nd to 12th floor is
Time = Distance / Speed
= 40 / 2
= 20 seconds.
Hope this helps you ....
Please mark as BRAINLIEST. ..
Speed of lift = 2m/s.
Speed = Distance / Time
Time = Distance / Speed
= 4 / 2
Time taken to reach one floor = 2 seconds
Distance from 2nd to 12th floor = 10 floor
= 10 × 4 = 40 metres.
Time taken from 2nd to 12th floor is
Time = Distance / Speed
= 40 / 2
= 20 seconds.
Hope this helps you ....
Please mark as BRAINLIEST. ..
great answer
mark this answer a brainliest!!
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