we know that v = dr /dt. here, what does r represent ? is it the difference in position (displacement), or is it just some initial or final position ? if it is the difference in position, in physics part 1 txt motion in a plane, pg 75 example 4.4, they have just given the position of the particle. then, how can we find out the velocity ? pls. clarify. thnx...

Dear Student ,
v = dr / dt

where dr  represents difference in position and r simply represents position.

  • -2
What are you looking for?