Neco Model Questions Vol1 2022 Physics Question 5

Practice essay / theory question 5 from the 2022 Neco Model Questions Vol1 Physics examination. This question covers Work, Power, Energy, Efficiency, Rolling resistance .

Neco Model Questions Vol1 2022 Physics Essay / Theory

Topics: Work Power Energy Efficiency Rolling resistance

Question 5 NECO_MODEL_QUESTIONS_VOL1 • 2022 • PHYSICS • essay

A 1500 kg car moves up a 5% incline (grade) with a constant speed of 20 m s⁻¹. The engine must overcome both the component of its weight along the slope and a rolling resistance whose coefficient is 0.02. The car travels 200 m along the incline.

Question Parts

( a )

Calculate the total work done by the engine in moving the car the 200 m distance.

( b )

Determine the average power output of the engine during this motion.

( c )

If the engine operates at an efficiency of 30 % and the calorific value of gasoline is 34 MJ per litre, estimate the volume of fuel consumed for the 200 m climb.

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About This Question

This is Neco Model Questions Vol1 2022 Physics Question 5. It is one of the essay questions from the 2022 Neco Model Questions Vol1 Physics examination.

The question covers Work, Power, Energy, Efficiency, Rolling resistance .

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