Using the approximate conversion factors in table below, convert the following t

Question

Using the approximate conversion factors in table below, convert the following to SI units without using your calculator.

Approximate conversion factors
1cm12in
10cm4in
1m1yard
1m3feet
1km0.6mile
1m/s2mph

A) 20 ft

Express your answer to one significant figure and include the appropriate units.

b) 30 mi

Express your answer to one significant figure and include the appropriate units.

c) 20 mph

Express your answer to one significant figure and include the appropriate units.

d) 2 in

Express your answer to one significant figure and include the appropriate units.

Explanation / Answer

A) 20 ft = 30/3 = 6.67 m

B) 30 mi = (30/0.6) km = 50 km = 50,000 m

C) 20 mph = 8.94 m/s

D) 2 in = 0.05 m

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