Using the table of conversion factors on the inside front cover, convert

$($a$)760$mile$\frac{s}{h}$ to $\frac{m}{s}.$

$($c$)5\mathrm{.}37{10}^{3}k\frac{J}{m}in$ to hp$.$

$($b$)921k\frac{g}{m^3}$ to $l\frac{b_m}{f}{t}^3.$

$2\mathrm{.}4($IT$)$

You are trying to decide which of two automobiles to buy. The first is American$-$made, costs $$14,500,$

and has a rated gasoline mileage of $28$ miles $\frac{?}{\text{g}\text{a}\text{l}}.$ The second car is of European manufacture, costs

$$21,700,$ and has a rated mileage of $19k\frac{m}{L}.$ If the cost of gasoline is $$\frac{1\mathrm{.}25}{g}al$ and if the cars actually

deliver their rated mileage, estimate how many miles you would have to drive for the lower fuel

consumption of the second car to compensate for the higher cost of this car?

$2\mathrm{.}5($IT$)$

A supersonic aircraft consumes $5320$ imperial gallons of kerosene per hour of flight and flies an

average of $14$ hours per day. It takes roughly seven tons of crude oil to produce one ton of kerosene.

The density of kerosene is $0\mathrm{.}965\frac{g}{c}{m}^3.$ How many planes would it take to consume the entire annual

world production of $4\mathrm{.}02{10}^9$ metric tons of crude oil?

$2\mathrm{.}0($OT$)$

Calculate

$($a$)$the weight in $l{b}_f$ of a $25\mathrm{.}0-l{b}_m$ object.

$($b$)$ the mass in $kg$ of an object that weight $25$ newtons.

$($c$)$the weight in dynes of a $10-$ton object $($not metric ton$).$

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