1. The problem statement, all variables and given/known data A 5g object moving to the right with a speed of 20cm/s makes an elastic head on collision with a 10g object initally at rest. Find a) The velocity of each objet after the collision. b) The fraction of the energy transferred to the 10g object. 2. Relevant equations In an elastic collision, momentum and energy is conserved. m1v1 + m2v2 (before collision) = m1v1 + m2v2 (after collision) v1i - v2i = -(v1f - v2f) 3. The attempt at a solution where do i start? I tried using the conservation of momentum equation, but you end up with two unknowns, final velocities of both objects. Can someone guide me please?