To protect their young in the nest, peregrine falcons will fly into birds of prey (such as ravens) at high speed. In one such episode, a 610 g falcon flying at 20.0 m/s hit a 1.60 kg raven flying at 9.0 m/s . The falcon hit the raven at right angles to its original path and bounced back at 5.0 m/s . Part A) By what angle did the falcon change the raven's direction of motion?Part B) What was the raven's speed right after the collision?

Energy cannot be created or destroyed. This statement is known as law of conservation of energy, and it implies that whenever a certain form of energy does change, the loss of this form of energy must have converted into an another type of energy. A typical example is an object falling to the ground: initially, the object has gravitational potential energy. As the object falls down, it loses potential energy (since its altitude from the ground decreases), but it acquires kinetic energy (because its velocity increases). In this example, potential energy has converted into kinetic energy, but the total energy of the object has remained constant.