md abul hasan
- 2
- 0
when a ball is thrown in upward direction --how can it be a negative displacement?
The discussion revolves around the concept of displacement in the context of a ball thrown upward. Participants are exploring whether the displacement can be considered negative based on the chosen coordinate system and direction of gravity.
The discussion is ongoing, with participants providing insights into the flexibility of coordinate systems and the importance of consistency in definitions. There is an exploration of different scenarios, such as throwing a ball from the ground versus from a height, but no consensus has been reached.
There is an emphasis on the arbitrary nature of the coordinate system and the need for consistency in applying chosen conventions. The role of gravity in defining positive and negative displacement is also under consideration.
is toward gravity +ve ?DrClaude said:You have the choice to say that the axis perpendicular to the ground points upward or downward (i.e., in the direction of gravity). It is purely arbitrary and won't affect the results, provided that the convention chosen is strictly adhered to: once you've chosen which way is positive, stick to it!
Yes, if the throwing the ball upwards results in a negative displacement, then the force of gravity is positive.md abul hasan said:is toward gravity +ve ?