A hawk is chasing a sparrow. At the beginning of the chase, the hawk’s kinetic energy is 5.1 Joules. At the end of the chase, the hawk doubles its speed. What is the best prediction for its kinetic energy at the end of the chase?(1 point) Responses 20.4 J 20.4 J 5.1 J 5.1 J 2.55 J 2.55 J 10.2 J
1 answer
The kinetic energy of an object is directly proportional to the square of its velocity. Since the hawk doubles its speed, its kinetic energy at the end of the chase will be four times its initial kinetic energy. Therefore, the best prediction for its kinetic energy at the end of the chase is 20.4 J.