3. [\#163] Sammy's height
In the US, lengths are often measured in inches, feet, yards and miles. Let's do some conversions. The definition of the inch is: 1 inch \( =25.4 \mathrm{~mm} \), exactly. A foot is 12 inches and a mile is 5280 ft , exactly. A centimetre is exactly 0.01 m or 10 mm .
Sammy is 5 feet and 5.3 inches tall. Mark all the true statements below (Hint: use the 'multiply by 1 ' technique. Use the appropriate number of sig figs.):
Sammy is 1.66 m tall.
Sammy is less than 0.5 m tall.
Sammy is between 1600 and 1700 mm tall.
Sammy is more than 168 cm tall
Sammy is 55.3 inches tall
Sammy is more than 60 inches tall
Sammy is 5.44 feet tall
Sammy is 5.4 feet tall
It would take about 90000 Sammies, lying head to toe, to span the entire length of Victoria's 90 -mile beach
It would take over 100000 Sammies, lying head to toe, to span the entire length of Victoria's 90 -mile beach
4. [\#164] Horsepower
A solar racing car* typically has a power of about 1.2 kW ( 1.2 kilowatts). What is this in horsepower (hp)? (Use
