Displacement and Velocity Direction Relationship

Click For Summary
Displacement and velocity do not always share the same direction. Displacement is defined as the shortest distance between two points, which can differ from the direction of velocity. For example, a projectile shot at an angle has an upward velocity while its displacement may be horizontal if it lands on an even surface. This distinction is crucial for understanding motion in physics. Overall, the relationship between displacement and velocity can vary based on the object's trajectory.
Silver15
Messages
2
Reaction score
0

Homework Statement


Hi, I'm new to physics and to theses forums. Hope to learn a lot and succeed in physics for school and most likely university. I'm just stuck on this one question:

Will displacement and velocity always have the same direction?

Thanks in advance.
 
Last edited:
Physics news on Phys.org
Oh I forgot to put what I have thought of:

Displacement is the shortest possible distance between things, and thus, it can be in a different direction than velocity.
A projectile can be shot upward at a very slight angle, and so, the velocity would be in the upward direction, but from where it was shot and where it lands is the displacement (given it's on an even surface), which is in a horizontal direction.Is this correct?
 
Welcome to PF!

Hi Silver15! Welcome to PF! :smile:

(btw, never reply to your own initial question: it takes the question off the No-replies list: edit the question instead :wink:)
Silver15 said:
Displacement is the shortest possible distance between things, and thus, it can be in a different direction than velocity.
A projectile can be shot upward at a very slight angle, and so, the velocity would be in the upward direction, but from where it was shot and where it lands is the displacement (given it's on an even surface), which is in a horizontal direction.

Yup, all correct! :biggrin:

(except, of course, displacement isn't actually a distance, is it? :wink:)
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

Similar threads

Replies
40
Views
2K
Replies
1
Views
2K
  • · Replies 27 ·
Replies
27
Views
2K
  • · Replies 8 ·
Replies
8
Views
4K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 12 ·
Replies
12
Views
2K
Replies
2
Views
5K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 6 ·
Replies
6
Views
3K