Velocity Vectors: Magnitude of V3 - A-F

In summary, the conversation discusses velocity vectors and their magnitudes and direction. The sum of two velocity vectors, V1 and V2, is V3. The possible magnitudes of V3 are 0, 6m/s, 5m/s, -1m/s, and -4m/s. It is mentioned that C and D could be true, but further clarification is needed. A helpful resource for understanding vector addition is provided.
  • #1
am08
44
0
The velocity vector V1 has a magnitude of 3m/s and is directed along the +x-axis. The velocity vector V2 has a magnitude of 2m/s. The sum of the two is V3, so that V3 = V1+V2

Which is True ?
A) The magnitude of V3 can be 0
B) The magnitude of V3 can be 6m/s
C) The magnitude of V3 can be 5m/s
D) The x-component of V3 can be -1m/s
E) The magnitude of V3 can be -4m/s
F) The magnitude of V3 can be 3m/s
 
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  • #2
Which ones do you think are true?
 
  • #3
C and D, but i know it's wrong... i just don't understand velocity vectors.
 
  • #4
i think its C
 
  • #5
there can be more than one answer, and i still can't figure it out...any help?
 
  • #6
take a look http://www.glenbrook.k12.il.us/GBSSCI/PHYS/Class/vectors/u3l1b.html" if you don't know how to add two vectors.
 
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Related to Velocity Vectors: Magnitude of V3 - A-F

1. What is a velocity vector?

A velocity vector is a mathematical representation of the speed and direction of an object's motion. It includes both a magnitude (speed) and a direction, typically represented by an arrow pointing in the direction of motion.

2. How is the magnitude of a velocity vector calculated?

The magnitude of a velocity vector is calculated by using the Pythagorean theorem, which states that the square of the hypotenuse (longest side) of a right triangle is equal to the sum of the squares of the other two sides. In this case, the magnitude is equal to the square root of the sum of the squares of the horizontal and vertical components of the vector.

3. What does the magnitude of a velocity vector represent?

The magnitude of a velocity vector represents the speed at which an object is moving. It is typically measured in units of distance per unit of time, such as meters per second or miles per hour.

4. How do you find the magnitude of V3 - A-F?

To find the magnitude of V3 - A-F, you would first need to calculate the horizontal and vertical components of each vector. Then, using the Pythagorean theorem, you can find the magnitude by taking the square root of the sum of the squares of the horizontal and vertical components.

5. Can the magnitude of a velocity vector be negative?

No, the magnitude of a velocity vector cannot be negative. It is always a positive value that represents the speed of an object. However, the direction of the vector can be negative, indicating motion in the opposite direction of the arrow.

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