Relative motion
Motion of a body is described in the terms of motion of another body is called relative motion
Relative velocity
The relative velocity is defined as the velocity of the body with respect to another body
"OR"
It is also defined as a distance between of two bodies.
There are three cases of relative motion . They are:-
Case 1
When in opposite direction
VAB = 100-80
Motion of a body is described in the terms of motion of another body is called relative motion
Relative velocity
The relative velocity is defined as the velocity of the body with respect to another body
"OR"
It is also defined as a distance between of two bodies.
There are three cases of relative motion . They are:-
Case 1
When in opposite direction
VAB = Relative
velocity
timetaken
= 75 km + 90 km
1hr
= 165 km/hr
Conclusion
VAB = VA+VB
Case 2
When in same direction
1
= 20 km/hr
Conclusion
VAB = VA-VB
VAB = VB-VA
Case 3
If two bodies are moving uniformly i.e. they are moving in the same direction with same velocity then the relative velocity = 0