A body of mass 8 k.g. moving with a velocity of 14 m/s along straight line collides with another body of mass 5 k.g. moving the same direction with a velocity of 5 m/s. after collision, the velocity of the heavier body becomes 7m/s. calculate the final velocity of the other body.
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Assuming it is a perfect collision, we can apply LCOE
i.e total energy remains constant
Increase in K.E of one object is the decrease in K.E of the other
Therefore 1/2*8(14-7)= 1/2*5(final Velocity-5)
Final velocity = 6.2m/s
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