Situation 4: Ivo wants to boost his immune system. He decided to exercise every morning. He starts jogging at a speed of 1 m/s. Suddenly, a dog barks and runs after him. He speeds up to 3 m/s until he reaches a speed of 5 m/s, as shown in figure 4. In which of the following situations does ivo possess the greatest amount of kinetic energy? Why do you say so?