Should the time component be written first or second when writing units for speed? Explain your answer.
State the unit that is most appropriate for measuring the speed of:
A person running.
A car driving.
A slug moving.
A motorcyclist riding.
A cheetah running.
A baby crawling.
Determine whether the following unit is the most appropriate for measuring the speed of constructing a skyscraper:
Vertical metres per hour.
Floors per month.
Floors per day.
For each of the following pairs of speeds, state which one is faster and why:
60 \text{ m/hr} and 60 \text{ km/hr}
70 \text{ m/h} and 70 \text{ m/s}
Convert the following:
2500 \text{ m} into kilometres.
2100 seconds into minutes.
45 \text{ km/hr} into metres/second.
7.562 \text{ km} into metres.
6.85 hours into seconds.
14 \text{ m/s} into kilometres/hour.
Convert each of the following speeds from kilometres per hour to metres per minute:
60 \text{ km/hr}
5 \text{ km/hr}
24 \text{ km/hr}
Write each of the following speeds in kilometres per hour:
600 \text{ m/min}
12 \text{ m} travelled in 90 minutes.
1600 \text{ m} travelled in 131 minutes, correct to two decimal places.
Calculate the speed in kilometres per hour for each of the following situations. Round your answer to one decimal place where necessary.
A car which travels 400 \text{ km} in 5 hours.
A cyclist who cycles 50 \text{ km} in 3 hours.
A train which travels 650 \text{ km} in 6 hours.
A boat which travels 10\,000 \text{ m} in 2 hours.
A go-kart which travels 35\,900 \text{ m} in 3 hours.
A person who has hiked 9000 \text{ m} in 1.5 hours.
A car which travels 20 \text{ km} in 30 minutes.
A cyclist who rides a total of 78 \text{ km} in 180 minutes.
A train which travels 15 \text{ km} in 10 minutes.
A car which travels 112 \text{ km} in 75 minutes.
Sophia captured footage of a hawk diving 200 \text{ m} in 10 seconds. Using this as a comparison, what units would be most appropriate for measuring the speed of a feather falling to the ground?
A race on land between two giant tortoises was recorded. The race was 200 \text{ m} long and the timekeeper (not a tortoise) measured the race in minutes. What would be the most appropriate unit for the average speed of each tortoise?
Oliver hikes for three hours, moving at a speed of 1.4 metres per second.
What unit would be more appropriate to describe his speed?
Hence, convert Oliver's speed to the more appropriate units.
Vanessa eats doughnuts at a rate of 0.13 doughnuts per second in a doughnut eating competition.
What would be a more appropriate unit of speed to describe this situation: doughnuts per hour or doughnuts per minute?
Hence, convert Vanessa's speed to the more appropriate units.
A turtle crawls for half an hour at a speed of 0.001 kilometres per second.
What unit would be more appropriate to describe the turtle's speed?
Hence, convert the turtle's speed to the more appropriate units.