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Un balón de soccer tiene una masa de 0.40 kg e inicialmente se mueve hacia la izquierda a 20 m/s , pero luego es pateado de manera que adquiere una velocidad con magnitud de 30 m/s y dirección de 45° hacia arriba y a la derecha. Calcule el impulso de la fuerza neta y la fuerza neta media, suponiendo que el choque dura ∆t=0.010s.
Sagot :
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