two football players are running toward each other. one football player has a mass of 105 kg and is running…

two football players are running toward each other. one football player has a mass of 105 kg and is running at 8.6 m/s. the other player has a mass of 90 kg and is running at -9.0 m/s. what is the momentum of the system after the football players collide? 93 kg·m/s 1,713 kg·m/s. 810 kg·m/s. 903 kg·m/s.

two football players are running toward each other. one football player has a mass of 105 kg and is running at 8.6 m/s. the other player has a mass of 90 kg and is running at -9.0 m/s. what is the momentum of the system after the football players collide? 93 kg·m/s 1,713 kg·m/s. 810 kg·m/s. 903 kg·m/s.

Answer

Explanation:

Step1: Definir la fórmula del momento lineal

El momento lineal de un objeto se define como $p = mv$, donde $m$ es la masa y $v$ es la velocidad. El momento total del sistema antes del choque es igual al momento total después del choque (ley de conservación del momento).

Step2: Calcular el momento de cada jugador

Para el primer jugador con $m_1 = 105$ kg y $v_1=8.6$ m/s, $p_1=m_1v_1 = 105\times8.6=903$ kg·m/s. Para el segundo jugador con $m_2 = 90$ kg y $v_2=- 9.0$ m/s, $p_2=m_2v_2=90\times(-9.0)= - 810$ kg·m/s.

Step3: Calcular el momento total del sistema

$p_{total}=p_1 + p_2=903+( - 810)=93$ kg·m/s.

Answer:

93 kg·m/s