A hawk is chasing a sparrow. At the beginning of the chase, the

Question

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)
5.1 J
20.4 J
10.2 J
2.55 J

Answer 1

The kinetic energy is proportional to the square of the speed. If the hawk doubles its speed, its kinetic energy will increase by a factor of 4.

5.1 J * 4 = 20.4 J

Therefore, the best prediction for its kinetic energy at the end of the chase is 20.4 J.