What does figure c indicate means what is meant by person sitting on either side of the two the other train seems to move with speed equal to sum of the two speeds
Dear Student,
The figure shows that object B is approaching a point while object A is moving from the point. The slope of the x-t curve is positive for A and negative for B which means that the velocity of A is positive and that of B is negative.
Hope it clears your doubt.
Regards
The figure shows that object B is approaching a point while object A is moving from the point. The slope of the x-t curve is positive for A and negative for B which means that the velocity of A is positive and that of B is negative.
Hope it clears your doubt.
Regards