every floor of a 20storey building is 4m high .a lift moves 2m per second .how long will it take to moves from 4th floor to 14th floor ?
Answers
Answered by
1
Step-by-step explanation:
It will take a time of total 30 sec
Answered by
5
Answer:
20 sec
Step-by-step explanation:
- Height of each floor = 4m
- speed of the lift. = 2m/s
Time Taken to reach the 14th floor = ?
Distance from 4th floor to 14th floor = 14 - 4
= 10 * 4
= 40 m
- Time taken to cover 2m = 1sec
- Time taken to cover 1m = 1/2 sec
Time taken to cover 40 m = 40 * 1/2
= 20 sec
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