1.

Calculate the velocity of a body of mass 2kg when it is at a height of 5m. falling freely from the height of 10m.​

Answer»

Mass - 2 kgHeight = 15 mGravity - 10 m/s²Initial Momentum :Since the Ball is in rest, the initial velocity of the ball will be 0 m / s. Hence we know that,Initial Momentum = Mass * Initial Velocity ( U ) => Initial Momentum = 2 kg * 0 m / s = 0 kg . m / sFinal Velocity ( v ) = √ ( 2gh )Final Velocity = √ ( 2 * 10 * 15 )Final Velocity = √ 300 => 10√3 m / sHence Final Momentum = Mass * Final Velocity ( v )=> Final Momentum = 2 * 10 √ 3 => Final Momentum = 20 √ 3 kg . m / sHope my answer HELPED :-)EXPLANATION: please mark me briliant please f



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