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A body of mass 5 kg make an elastic collision with another body at rest and continue to move in the originna direction after collision with a velocity equal is 1/10th of the original velocity then mass of the second body is?
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A body of mass 5 kg make an elastic collision with another body at res...
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A body of mass 5 kg make an elastic collision with another body at res...
Given Data:
Mass of first body (m1) = 5 kg
Initial velocity of first body (u1) = u
Final velocity of first body (v1) = u/10

Conservation of Momentum:
According to the law of conservation of momentum, the total momentum before the collision is equal to the total momentum after the collision.
m1u1 = m1v1 + m2v2
5u = 5(u/10) + m2v2
5u = 0.5u + m2v2
4.5u = m2v2

Conservation of Kinetic Energy:
In an elastic collision, kinetic energy is conserved.
0.5m1u1^2 = 0.5m1v1^2 + 0.5m2v2^2
0.5(5u^2) = 0.5(5(u/10)^2) + 0.5(m2v2^2)
2.5u^2 = 0.25u^2 + 0.5(m2v2^2)
2.25u^2 = 0.5(m2v2^2)

Solving for m2:
From the conservation of momentum equation: 4.5u = m2v2
m2 = 4.5u/v2
Substitute m2 = 4.5u/v2 into the conservation of kinetic energy equation:
2.25u^2 = 0.5((4.5u/v2)v2)^2
2.25u^2 = 0.5(4.5u)^2
2.25u^2 = 10.125u^2
m2 = 10.125u^2 / 2.25u^2
m2 = 4.5 kg
Therefore, the mass of the second body is 4.5 kg.
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A body of mass 5 kg make an elastic collision with another body at rest and continue to move in the originna direction after collision with a velocity equal is 1/10th of the original velocity then mass of the second body is?
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