1. **Problem statement:** A runner jogs at 2 km/h and takes 2 steps per second. We need to find how many steps he takes while jogging 1.5 km. 2. **Relevant formulas and concepts:** - Speed = Distance / Time - Steps per second is the step frequency. 3. **Calculate the time taken to jog 1.5 km:** Given speed $v = 2$ km/h and distance $d = 1.5$ km, $$t = \frac{d}{v} = \frac{1.5}{2} = 0.75 \text{ hours}$$ 4. **Convert time to seconds:** $$0.75 \text{ hours} = 0.75 \times 3600 = 2700 \text{ seconds}$$ 5. **Calculate total steps:** Step rate = 2 steps/second, Total steps = step rate $\times$ time in seconds = $2 \times 2700 = 5400$ steps. **Final answer:** The runner takes **5400 steps** while jogging 1.5 km.