Ind.Practice4_Impulse & Conservation of Momentum POSSI Calculate the final velocity of the first train car for this elastic collision. 2 kg 2 kg 2 kg 2 kg At rest At rest 5 m/5 10m/s 2.5m/s 5m/sInd. Practice4_Impulse & Conservation of Momentum What is the Law of Conservation of Momentum ? O Total momentum of a closed system remains constant Total momentum before a collision is less than the total momentum after the collision Total energy of a system remains constant O Total momentum before a collision is more than the total momentum after the collisionFind the final velocity "V" after this perfectly inelastic collision? 9 kg 9 kg 9 kg 9 kg 2m/s 1 m/s V= ? O 1.5m/s 0.5m/s 1.0m/s 03m/sInd.Practice4_Impulse & Conservation of Momentum Auto saved at: 12 POSSIBLE POINTS: 10 During an explosive collision, a cannonball is fired from a cannon. Both objects experience the same magnitude of momentum after the collision. FALSE TRUEInd.Practice4_Impulse & Conservation of Momentum If two particles have equal kinetic energies, must they have the same momentum? No, they may have same speed and mass but not the same velocity Yes, because momentum is mass in motion and so is kinetic energy Yes, it means they have same velocity and mass O No, they may have same velocity but different massInd.Practice4_Impulse & Conservation of Momentum POSSIBLE POINTS: 10 A train-trolley with mass 700kg and with a velocity of 1 m/s has an inelastic collision with a stationary trolley. The stationary trolley has a mass of 500kg. After collision, both trollies couple and stay attached. With what velocity they will move together after collision? 1.59m/s 1.68m/s 1.07m/s 0.58m/sInd.Practice4_Impulse & Conservation of Momentum 4 of 10 POSSIBLE POINTS: 10 A 700kg object is moving at 6 m/s when a 100 N force is applied opposite to the direction of the objects motion, causing it to slow down to 5m/s. How long was this force applied? 1.0s 70.05 O 7.05 0.7s