1. The problem is to find the formula to calculate speed. 2. Speed is defined as the distance traveled divided by the time taken to travel that distance. 3. The formula for speed is: $$\text{speed} = \frac{\text{distance}}{\text{time}}$$ 4. Important rules: - Distance must be in consistent units (e.g., meters, kilometers). - Time must be in consistent units (e.g., seconds, hours). - Speed will be in units of distance per time (e.g., meters per second). 5. For example, if a car travels 100 kilometers in 2 hours, the speed is: $$\text{speed} = \frac{100}{2} = 50$$ So the speed is 50 kilometers per hour. This formula applies to constant speed motion.