The 154 floor Burj-Al-Arab hotel constructed between 1994 and 1999 gives;
a. Approximately 78,892 hours
b. 8
c. 35 meters
d. Vicky
What equations can be used to calculate distance and time?
The duration of the construction = 1999 – 1994 = 5 years
Number of floors = 154
Height of each floor = 5 m.
a. If the construction started 2 years earlier and the completion date was 2 years later, we have;
Number of hours in a year ≈ 8765.8
Number of years = 2 + 5 + 2 = 9
Total number of hours = 9 × 8765.8 ≈ 78,892
- The construction of the Burj-Al-Arab will take approximately 78,892 hours
b. Given that floors 1 – 8 are occupied by hotels, the number of floors occupied by hotels and restaurants is 8
c. The number of floors between the first and eight floor is 8 - 1 = 7
The distance, D, they will cover going to the 8th floor from the first floor is therefore;
- D = 7 × 5 meters = 35 meters
d. The speed of John's lift = 2 m/s
Vicky's lift speed = 3 m/s
Distance from the 8th to the 26th floor = 5 meters × (26 - 8) = 170 meters
John's time = (170 m)/(2 m/s) = 85 s.
Vicky's arrival time = (170 m)/(3 m/s) ≈ 56.7 s
John arrived in 85 seconds while Vicky arrived in approximately 56.7 seconds, therefore;
- Vicky arrived earlier and has to wait for John
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