What was the speed of the car when it traveled back from point B to point A?

The car reached point B (120 km from A) at t=11. After a 2-hour stop (until t=13), the car started its return journey to point A. The graph shows that the car reached point A (0 km) at t=21.

• Total distance traveled back = 120 km
• Time taken for return journey = 21 hours - 13 hours = 8 hours
• Speed = Distance / Time = 120 km / 8 hours = 15 km/h

Ответ: 15 км/ч