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10. 2 cars collide in this situation Car A has a mass of 10kg and car B has a mass of 20kg. Car A is at rest while car B is traveling at 4m/s and it is going west. After the collision car A and car B are stuck what is the final velocity? 11. What is the momentum of a car moving at 10m/s with a mass of 7kg?

Pergunta

10. 2 cars collide in this situation Car A has a mass of 10kg and car B has a mass of 20kg. Car A is at
rest while car B is traveling at 4m/s and it is going west. After the collision car A and car B are
stuck what is the final velocity?
11. What is the momentum of a car moving at 10m/s with a mass of 7kg?

10. 2 cars collide in this situation Car A has a mass of 10kg and car B has a mass of 20kg. Car A is at rest while car B is traveling at 4m/s and it is going west. After the collision car A and car B are stuck what is the final velocity? 11. What is the momentum of a car moving at 10m/s with a mass of 7kg?

Solução

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XimenaEspecialista · Tutor por 3 anos

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10. Para resolver este problema, podemos usar la conservación del momento lineal. Antes de la colisión, el momento total del sistema está dado por el momento de Car B, ya que Car A está en reposo. Después de la colisión, los dos coches están pegados, por lo que su velocidad final será la misma. Podemos establecer la ecuación de conservación del momento lineal como:<br /><br />momento inicial = momento final<br /><br />momento de Car B = (masa de Car A + masa de Car B) * velocidad final<br /><br />(20 kg * 4 m/s) = (10 kg + 20 kg) * velocidad final<br /><br />80 kg*m/s = 30 kg * velocidad final<br /><br />velocidad final = 80 kg*m/s / 30 kg<br /><br />velocidad final = 2.67 m/s<br /><br />Por lo tanto, la velocidad final de los dos coches después de la colisión es de 2.67 m/s hacia el oeste.<br /><br />11. El impulso de un objeto se define como el producto de su masa y su velocidad. En este caso, el impulso del coche se puede calcular utilizando la fórmula:<br /><br />impulso = masa * velocidad<br /><br />impulso = 7 kg * 10 m/s<br /><br />impulso = 70 kg*m/s<br /><br />Por lo tanto, el impulso del coche que se mueve a 10 m/s con una masa de 7 kg es de 70 kg*m/s.
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