A helicopter leaves Shannon at 9:30 a.m - Junior Cycle Mathematics - Question d - 2016
Question d
A helicopter leaves Shannon at 9:30 a.m. and arrives in Limerick at 9:45 a.m. the same morning. It travels 25 km during this journey.
Find its mean speed on the jou... show full transcript
Worked Solution & Example Answer:A helicopter leaves Shannon at 9:30 a.m - Junior Cycle Mathematics - Question d - 2016
Step 1
Calculate the time taken for the journey
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Answer
The helicopter travels from 9:30 a.m. to 9:45 a.m., which is a total time of 15 minutes. To convert this into hours, we can express it as:
ext{Time in hours} = rac{15 ext{ minutes}}{60 ext{ minutes per hour}} = 0.25 ext{ hours}
Step 2
Use the formula for speed
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Answer
The formula for speed is given by:
ext{Speed} = rac{ ext{Distance}}{ ext{Time}}
In this case, the distance traveled is 25 km and the time taken is 0.25 hours. Thus, we can calculate the speed as follows:
