An object 4.59 kg traveling at 2.76 m/s collides with another object 11.80 kg that has an initial velocity of 1.81 m/s in the same direction as the first object. After the two objects collide, the one of mass 11.80 kg has a velocity of 2.62 m/s in the same direction as it's original velocity.
a) Calculate the speed of the 4.59 kg block right after the collision.
b) Calculate the change in the total kinetic energy of the objects from the collision.