Block 1 has a mass of 1.70 kg and block 2 has a mass of 7.79 kg. Block 2 is released from rest at a height of h = 1.30 m above the floor. 1 2 h ) Find the speed of the 7.79 kg block just before it hits the floor, if there is no friction. ubmit Answer Tries 0/10 ) Find the speed of the 7.79 kg block just before it hits the floor if the coefficient of kinetic friction of the 1.70 kg block is 0.108