Two train cars are on a smooth level track. Car 1 has an initial mass of 10,000

Question

Two train cars are on a smooth level track. Car 1 has an initial mass of 10,000 kg and an initial speed of 18 m/s. Car 2 is at rest and has a mass of 17,000 kg. As car 1 rolls it passes under a loading chute and 3,000 kg of corn are deposited in car 1. Car 1 then collides and connects to car 2. A) What is the initial momentum of car 1? B) What is the speed and kinetic energy of car 1 after the corn is loaded? C) What is the speed and kinetic energy of the connected cars after the collision? All I really need is draw diagrams!

Explanation / Answer

after loading corns a) initial moment of car = 10000*18 =180000 kg*m/sec b) after corn is laoded velocity of car 1 = V 10000*18=13000*V V = 13.846 m/s kinetic energy = 0.5 * 13000 * (13.846)^2 = 1.246*10^6 J c) after collision velocity of both cars 13000*13.846 = 30000* V V = 5.99 m/s

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