1. The problem statement, all variables and given/known data A 55 kg student stands on a 4.6 kg surfboard moving at 2.0 m/s [E]. The student then walks with a velocity of 1.9 m/s [E] relative to the surfboard, relative to the water. Neglect Friction. Answer: 0.25 m/s[E] 2. Relevant equations m1vi1 + m2vi2 = m1vf1 + m2vf2 3. The attempt at a solution m1= 55kg m2= 4.6kg vi1= ? vi2= ? vf1= ? vf2= ? How do I solve this? Please help me set up variables. Please and Thank you!