Problem for an 8 years old child
There are two cars A and B.
A is going from Madrid to Seville by the M-232 road, A leaves Madrid at 9:00 am and takes an average speed between 50 km/hour and 150 km/hour.
B is going from Seville to Madrid by the same road M-232, B leaves Seville at 10:00 am and takes an average speed between 75kms/hour and 125 km/hour.
When the two cars cross each other, what car will be closer to Sevilla?
Details and assumptions:
From Madrid to Seville are 500 kms.
Cars are considered points in space massless (without mass) and the road is unidimensional