1. **State the problem:** A human and a turtle compete in a 1 km race. The turtle moves at a constant speed of 0.2 km/h and receives a 980 m head start. The human runs at a speed 100 times greater than the turtle's speed. Both start moving at the same moment from their respective starting points. We need to find who reaches the finish line first. 2. **Convert all distances to the same unit:** The race distance is 1 km = 1000 m. The turtle's head start is 980 m, so the turtle only needs to cover $1000 - 980 = 20$ m to finish. 3. **Speeds:** - Turtle speed: $0.2$ km/h = $200$ m/h - Human speed: $100 \times 0.2 = 20$ km/h = $20000$ m/h 4. **Calculate time taken by each to finish:** - Turtle time: $t_t = \frac{\text{distance}}{\text{speed}} = \frac{20}{200} = 0.1$ hours - Human time: $t_h = \frac{1000}{20000} = 0.05$ hours 5. **Compare times:** Since $t_h = 0.05$ hours is less than $t_t = 0.1$ hours, the human reaches the finish line first. **Final answer:** The human reaches the finish line first.