The following lab set-up consists of two carts on a frictionless surface. Each end of the spring is attached to one of the carts and compressed. The two carts are then held together with a thin wire and are at rest. The mass of Cart A is m and the mass of Cart B is 3.0 m. CART B CART A Wire 3.0 m m Spring After the wire is cut, Cart A moves to the left with a velocity of 1.2 m/s. and Cart B moves to the right with an unknown velocity. CART B CART A Cut Wire VII 3.0 m m Determine the speed of Cart B. a. 0.40 m/s b. 2.5 m/s c. 1.2 m/s d. 3.6 m/s Spring 000000000000000)