Question 1
A person travels from A to B at 45 km/h and returns at 70 km/h. What is the average speed for the entire journey?
Step-by-step:
1. For equal distances, Average Speed = (2 × v1 × v2) / (v1 + v2)
2. = (2 × 45 × 70) / (45 + 70)
3. = 6300 / 115 = 54.8 km/h
1. For equal distances, Average Speed = (2 × v1 × v2) / (v1 + v2)
2. = (2 × 45 × 70) / (45 + 70)
3. = 6300 / 115 = 54.8 km/h