An electric compact car of mass 1.2 ×10³ kg accelerates uniformly from rest to 24 m…
PHYSICS · Multi-part · CBSE · Physics · Work, Energy and Power · Work, Energy and Power
Problem
An electric compact car of mass 1.2 ×10³ kg accelerates uniformly from rest to 24 m s⁻¹ in 12 s on a horizontal roadway. Air resistance and rolling resistance are negligible for this simplified analysis.
(a) Determine the change in the car’s kinetic energy during the 12 s interval.
(b) Calculate the average mechanical power that must be delivered to the car’s drive wheels during this interval.
(c) The car’s battery pack can provide a maximum continuous power of 65 kW. Based on your result in part (b), discuss whether the battery pack alone is capable of producing the required power for this acceleration and justify your answer.