TS EAMCET 10-Sep-2020 Shift 1 Solved Paper

A bullet of mass 25 g moves horizontally at a speed of 250 m/s is fired into a woodenblock of mass 1 kg suspended by a long string. The bullet crosses the block and emergeson the other side. If the centre of the mass of the block rises through a height of 20 cm.The speed of the bullet as it emerges from the block is(Take g= 10 m/s2)