A frog is sitting on a lily pad when it sees a delicious fly. He darts out his tongue at a speed of 6.50m/s to catch the fly. The tongue has a mass of 0.410 g, and the rest of the frog plus the lily pad have a mass of 12.5 g. What is the recoil speed of the frog and the lily pad? Ignore drag forces on the pad due to the water.

Fig: 1