- #1
vizakenjack
- 57
- 4
Question #7. It says:
The (constant) acceleration points in the direction of the difference of the velocities (final minus initial).
Note how initial vector is subtracted from the final one (head to tail).
But in this video, average acceleration (change in velocity) is found by adding velocity vectors tail to tail.
And as you can see, direction of the acceleration vector is found differently than in the previous example.
Why? And how do you find acceleration vector given two velocity vectors?
Also, explanation to question 8:
"The (anti-)parallel component of the acceleration slows it."
What (anti-)parallel component??
Also, velocity vector pointing straight downward, why would indicate that an object decided to turn right?
If it's pointing downward, wouldn't it mean that a person is moving downwards with a certain velocity? No? I mean, velocity vector (direction) already shows in which direction an object is moving...
The (constant) acceleration points in the direction of the difference of the velocities (final minus initial).
Note how initial vector is subtracted from the final one (head to tail).
But in this video, average acceleration (change in velocity) is found by adding velocity vectors tail to tail.
And as you can see, direction of the acceleration vector is found differently than in the previous example.
Why? And how do you find acceleration vector given two velocity vectors?
Also, explanation to question 8:
"The (anti-)parallel component of the acceleration slows it."
What (anti-)parallel component??
Also, velocity vector pointing straight downward, why would indicate that an object decided to turn right?
If it's pointing downward, wouldn't it mean that a person is moving downwards with a certain velocity? No? I mean, velocity vector (direction) already shows in which direction an object is moving...