059. A girl move with the speed of 6 km /h¹ and with the speed of 4 km/h for the next 3 h. Find the average speed of the girl and the total distance moved. A( 4.8 km h¹,24 km)
Maintenance. The final phase of a sprint is the maintenance phase. Sprinting is not thought of as an endurance sport, but even sprinters cannot maintain top speed for the entire race. In the final stage, the sprinter begins