Find out the final velocity of the skateboard
A boy of mass 46.2 kg is initially on a skateboard of mass 2.00 kg, moving at a speed of 10.2 m/s. The boy falls off the skateboard, and his center of mass moves forward at a speed of 10.9 m/s. Find the final velocity of the skateboard.
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Upon quenching the steel from 950 degree Celsius to 50 degree Celsius what phases will be present what will be the composition?
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