Boeing stretches boundaries of travel

This article relies on numeracy, specifically the calculations of speed, time and distance, to compare Boeing's proposed high speed, long range passenger aircraft and the current Boeing 747 400. Many ideas can be appropriated from this article.

Such an article can provide the opportunity for reinforcement of basic numeracy in a real context including such things as decimals, fractions and place value. The opportunity also exists to introduce a basic equation, speed = distance /time, and how to manipulate it to gain the results required. We can use limited information to complete the picture.

The speed of sound (Mach 1) = 331 metres/sec or
331 * 60 =19860 metres/min
19860*60 = 1191600 metres/hr
1191600/1000 = 1191.6 km/hr

Mach .95 = 1191.6 * .95 = 1132 km/hr

Once we know the proposed new jet's speed we can determine that of the 747. New jet @ 1132 km/hr saves approximately 1 hr every 4825 km/in travelled when compared with that of the 747.

distance/speed = time new jet, 4825/1132 = 4.26 hrs
Add one hour for 747, speed = distance/time s = 4825/ 5.3
Speed of 747 = 910 km/h (approximately)

This can be extended by asking:

The opportunity exists to express this visually with graphs.

One should also consider the SOSE aspects, as in the first question for students. For example:

Other areas of potential interest.

(Written by Leigh Price, BTeach student, University of Tasmania, 2001)

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