Train cars are coupled together by being bumped into one another. Supposed to loaded train cars are moving toward one another, the first having a mass of 130,000 KG and the velocity of 0.300 M/S, and the second having a mass of 135,000 KG and I velocity of -0.120M/S. (The minus indicates direction of motion.) what is their final velocity? m/s ?
Train cars are coupled together by being bumped into one another. Supposed to loaded train cars are moving toward one another, the first having a mass of 130,000 KG and the velocity of 0.300 M/S, and the second having a mass of 135,000 KG and I velocity of -0.120M/S. (The minus indicates direction of motion.) what is their final velocity?
m/s ?
According to Conservation of momentum, total momentum of a system remains constant.
ptot = p′tot
Then conservation of momentum In the case of the collision between two masses is,
m1u1 + m2u2 = m1v1 + m2v2
where,
ptot = total momentum before collision
p′tot = total momentum after collision
m1 = mass of first body
m2 = mass of second body
u1, u2 = initial velocity of first and second
v1,v2 = final velocity of first and second
Since, in this case two cars are moved together after collision, they have same velocity(v) after collision then,
m1u1 + m2u2 = (m1+m2)v
v = (m1u1 + m2u2)/(m1+m2)
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