A car accelerates from rest to 30 km/h. Later, on a highway it accelerates from 30 km/h to 60 km/h. Which takes more energy, going from 0 to 30, or from 30 to 60?
(a) 0 to 30 km/h.
(b) 30 to 60 km/h.
(c) Both are the same.
Ans: (b) 30 to 60 km/h.
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