How do you find average velocity from a position-time graph?

Click For Summary
Average velocity is calculated by determining the change in position over the change in time from a position-time graph. To find instantaneous velocity, one must analyze the slope of the tangent line at a specific point on the graph. The discussion highlights the importance of understanding these concepts through definitions and practical application on graphs. Clarification on previous answers regarding these calculations is also sought. Mastering these methods is essential for accurately interpreting motion in physics.
ihatephysics
Messages
3
Reaction score
0
Also, how do you find instantaneous velocity from a position-time graph?
 
Physics news on Phys.org
ihatephysics said:
Also, how do you find instantaneous velocity from a position-time graph?

What is the definition of average velocity? If you look it up somewhere, I'm sure you'll know how to deal with the position-time graph.
 

Thread 'Magnitude of buoyant force in fluids of different densities'

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?
View full post »

Similar threads

Two Equations for Average Velocity?
  • · Replies 2 ·
Replies
2
Views
3K
Momentum: instantaneous or average?
  • · Replies 9 ·
Replies
9
Views
1K
Formula for the average EMF of generator
  • · Replies 6 ·
Replies
6
Views
955
Finding acceleration from Velocity vs Position graph
  • · Replies 2 ·
Replies
2
Views
4K
Calculate Distance Traveled: Instantaneous vs. Average Velocity
  • · Replies 5 ·
Replies
5
Views
2K
Why would this be accelerating positively?
  • · Replies 6 ·
Replies
6
Views
1K
Voltage vs Distance graph for a given E vs D graph
  • · Replies 9 ·
Replies
9
Views
429
Kinematics : Average velocity problem
  • · Replies 9 ·
Replies
9
Views
1K
Motion of an Object: Displacement & Average Velocity
  • · Replies 8 ·
Replies
8
Views
2K
Find velocity-time equation from velocity-position equation
  • · Replies 11 ·
Replies
11
Views
2K