Railway car A, shown above, moves with a velocity of 4 m/s to the right. It...

   

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Railway car A, shown above, moves with a velocity of 4 m/s to the right. It then collides with a second railway car, B, that is initially at rest. After the collision, railway car A is observed moving to the left with a velocity of 2 m/s. VOB =0 (a) Calculate the momentum of railway car A before the collision. (PA P = mv 11 PA MAVOA = (2000) (4) = 8000 Ns (b) Calculate the velocity of car B after the collision. (VB) V&A=2 MAVOA + MOB = MAVFAT M 13 VS B (2000) (4) = (2000) (-2) + (400) VFB) (VFB = 6 MG (c) Determine the change in momentum of car A due to the collision with car B. (impulse (J)=Ap) (d) Determine the change in momentum of car B due to the collision with car A. APB M (VE-VOB) = 41000 (3-0)= [12000 NS (e) How does your answer in part (c) compare to part (d)? Explain the significance of this result. The significance is the proof of Conteration of Mamertin, mmtun , as demonstrated by the equal is Conserved magnitude of (c) and (d), just the sins one opposite ble the velocities ac in different rect as it is a vector quantity- (f) Was this collision elastic, inelastic, or completely inelastic? Justify your response. A = 2000 kg VA = 4 m/s B mB = 4000 kg Railway car A, shown above, moves with a velocity of 4 m/s to the right. It then collides with a second railway car, B, that is initially at rest. After the collision, railway car A is observed moving to the left with a velocity of 2 m/s. VOB =0 (a) Calculate the momentum of railway car A before the collision. (PA P = mv 11 PA MAVOA = (2000) (4) = 8000 Ns (b) Calculate the velocity of car B after the collision. (VB) V&A=2 MAVOA + MOB = MAVFAT M 13 VS B (2000) (4) = (2000) (-2) + (400) VFB) (VFB = 6 MG (c) Determine the change in momentum of car A due to the collision with car B. (impulse (J)=Ap) (d) Determine the change in momentum of car B due to the collision with car A. APB M (VE-VOB) = 41000 (3-0)= [12000 NS (e) How does your answer in part (c) compare to part (d)? Explain the significance of this result. The significance is the proof of Conteration of Mamertin, mmtun , as demonstrated by the equal is Conserved magnitude of (c) and (d), just the sins one opposite ble the velocities ac in different rect as it is a vector quantity- (f) Was this collision elastic, inelastic, or completely inelastic? Justify your response. A = 2000 kg VA = 4 m/s B mB = 4000 kg