1. The problem statement, all variables and given/known data A car travels to home from school. For the first 100km it travels 100km/h and for the rest of trip travels 50km/hr and completes the trip in 1 hr and 42 min. Calculate the avg speed for the ENTIRE trip. 2. Relevant equations Average Speed=∑i|d/Δttotal 3. The attempt at a solution It's asking for the entire trip so we assume it comes back home. In this case is avg speed = 0 because the displacement was 0.