Question

Asked Jun 3, 2019

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^{8} J per gallon.)

- a) What is the force exerted to keep the car moving at constant speed?

N

(b) If the required force is directly proportional to speed, how many gallons will be used to drive 108 km at a speed of 28.0 m/s?

gallons

Step 1

(A)The number of gallons of gasoline is 2.20.

The percentage of gasoline goes into useful work is 30%.

Energy content of a gasoline is 1.3x10^{8}J per gallon.

Thus the energy used by the car is.

Step 2

Write the expression for work done.

Step 3

Rewrite equation (I) to obtain an expression for...

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