Velocity time graph with distance and average speed

Click For Summary
Velocity can be determined from a graph that plots distance against time by analyzing the slope of the graph. The slope represents the instantaneous velocity at any given point on the curve. Average speed, on the other hand, is calculated by dividing total distance by total time. Understanding the relationship between distance, time, and velocity is crucial for interpreting such graphs accurately. Therefore, it is possible to derive velocity from a distance-time graph by focusing on the slope.
theguy123
Messages
3
Reaction score
0
I know how to work out velocity once you have the graph, I'm just not sure if i can do the graph with distance and average speed.

So, can you work out velocity from a graph with distance and average speed?
 
Physics news on Phys.org
Velocity is "slope" (it's the tangent line) of the distance at anyone instant.
 
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 6 ·
Replies
6
Views
955
  • · Replies 9 ·
Replies
9
Views
429
  • · Replies 9 ·
Replies
9
Views
1K
  • · Replies 2 ·
Replies
2
Views
3K
Replies
5
Views
2K
  • · Replies 25 ·
Replies
25
Views
2K
Replies
20
Views
2K
  • · Replies 6 ·
Replies
6
Views
1K
  • · Replies 5 ·
Replies
5
Views
3K
Replies
25
Views
2K