Vector addition problem needs help

AI Thread Summary
The discussion revolves around a vector addition problem involving two velocity vectors, V1 and V2, with magnitudes of 4m/s and 3m/s, respectively. Participants are asked to evaluate the truth of several statements regarding the resultant vector V3, which is the sum of V1 and V2. Key points include the understanding that V3's magnitude cannot be negative or zero, and that it can be 7m/s or 8m/s depending on the direction of V2. The conversation emphasizes the importance of grasping vector concepts and basic addition and subtraction in solving such problems. Participants are encouraged to refer to textbooks for further clarification on vector fundamentals.
hayzman5
Messages
1
Reaction score
0
The velocity vector V1 has a magnitude of 4m/s and is directed along the +x-axis. The velocity vector V2 has a magnitude of 3m/s. The sum of the two is V3, so that V3 = V1+V2
(For each statement select T-True, or F-False; If the first is True and the rest F, enter TFFFFF).

A) The magnitude of V3 can be 7m/s
B) The x-component of V3 can be 0m/s
C) The magnitude of V3 can be -4m/s
D) The magnitude of V3 can be 0
E) The magnitude of V3 can be 8m/s
F) The magnitude of V3 can be 3m/s

i hate these tyes of problems can someone please help me out
 
Physics news on Phys.org
Tell us what you have tried so far. The math is only addition and subtraction, so your problem begins by finding out what a vector is. You got a textbook?
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Sequental elastic and inelastic collisions
Replies
4
Views
2K
Velocity Vectors: Magnitude of V3 - A-F
Replies
5
Views
3K
Velocity Vectors | True/False Answers
Replies
5
Views
4K
Conservation of momentum & energy
Replies
11
Views
2K
Finding z component of a unit vector
Replies
2
Views
3K
Calculate electric force using Coulomb's law (vector components are the struggle)
Replies
3
Views
1K
Solve velocity addition problems using 4-vector
Replies
8
Views
2K
Finding velocities in super elastic collision
Replies
3
Views
2K
Is Scalar Addition Equivalent to Adding Parallel Vectors?
Replies
3
Views
2K
Inelastic Collision Problem: Speed of Earth and People
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top