1.

A mass of 10kg is dropped from a height of 50cm.find its kinetic energy and velocity

Answer»

e INITIAL velocity is 0 because the MASS is in DROPPING state.. Now, v^2-u^2=2ghv^2=2*10*50*100v=√2*5*5*2*10*100v=100√10 =100*3.16 =316m/sAnd now the kinetic energy =1/2mv^2=1/2*10*316=1580J



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