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Q5. (a) During a trial run towing a barge, the values of pull , P kN and speed V knots , were recorded as shown in Table Q5 .

Draw a straight - line graph to verify P and V are related by a law of the form P = kVⁿ where k and N are constants.

Table Q5

Suggested scales: horizontal axis 2 cm = 0.1

Vertical axis 2 cm = 0.1

(b) Use the graph drawn in Q5(a) to estimate the values of k and n