2-33 A damaged 1200-kg car is being towed by a truck. Neglecting the friction, air drag, and rolling resistance, determine the extra power required a) for constant velocity on a level road, b) for constant velocity of 50 km/h on a 30° (from horizontal) uphill road, and c) to accelerate on a level road from stop to 90 km/h in 12 s. Answers: a) 0, b) 81.7 kW, c) 31.3 kW The First Law of Thermodynamics | |
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