A car of mass 2000 kg is initially moving at 18 km h-1. How much is the force required to change the speed to 36 km h-1 in 2 s?
Question
Solution 1
Primero, convertimos las velocidades de km/h a m/s:
- Velocidad inicial (u): 18 km/h = 18 * (1000 m / 3600 s) = 5 m/s
- Velocidad final (v): 36 km/h = 36 * (1000 m / 3600 s) = 10 m/s
Luego, calculamos la aceleración (a) usando la fórmula de aceleración:
donde:
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