السؤال الثامن
a) from law of conservation of energy
m1*g*h = m2 *g*h + 0.5*m1*v^2 + 0.5*m2*v^2
0.5 * ( m1 + m2 ) * v^2 = ( m1 - m2 ) * g*h
so the speed is
v = UnderSquare [ 2*g*h*( m1 - m2 ) / ( m1 + m2 ) ]
b)
Again from the law of conservation
m2*g*h + 0.5*m2*v^2 = m2*g*H
So H is
H = (g*h + 0.5*v^2) / g
إن شاء الله فهمتي و إذا بغيتي توضيح أكثر آمري