Recent content by nerdalert21

Ok sorry for all the questions but i just want to make sure I am going to do this right So I solve for Δr and put those under the radical sign? But since those are vector components I can't add them together Am i putting the wrong values under the rad sign?

Thats where you square the values and put them under the radical sign right?

Its asking for Δr in meters

Im not sure, I can try it again I think I may have been confused on what numbers get plugged in where So t=10.3s a=4.21i+7.36j m/s^2 Vi=0? And then I am solving for rf-ri Is that all correct?

If i knew I would use them For A) I used F=ma Vf=Vi+at For B) I used arctan (Vxf/Vyf) For C) the equation I thought might be right was rf=ri + Vit + 1/2at^2, but that was wrong And for D) I tried to multiply the time by the velocity components because the seconds...

Homework Statement Two forces, vector F 1 = (4 i hat bold + 6 j hat bold) N and vector F 2 = (4 i hat bold + 8 j hat bold) N, act on a particle of mass 1.90 kg that is initially at rest at coordinates (+1.95 m, -3.95 m). A) What are the components of the particle's velocity at t = 10.3...

The other person who replied said that you need to add what they got (13.575) to M2, which is 3 Rounding that gives you 17

Actually quick question For c and d so c is asking for the displacement the particle undergoes during the first 10.3s? Ive tried using the answer from part a for this part but every variation i use is wrong The answer for a was (43.3i+75.9j) m/s What am i doing wrong?

Oh nevermind I got it Thanks for helping guys :)

In my calculations I did divide by 1.9 And yeah i fixed the 16 to a 14

Yeah I messed up with the addition, so its (8.00i+14.00j) right?

No :/ Ok so I found the Final F to be (8.00i+16.00j)N Acceleration is [(8i+16j)N]/1.90kg Or [(8i+16j)m/s^2]/1.9 Then I used the kinematic equation where Vf=Vi+at Because the Vi is 0 and I know the acceleration and time But its still wrong ?

Ohhhh got it Duh haha Lets see if I can get it

So your saying I just need to add the two forces together to get the components of the particles velocity? So Final F= (4i+6j)N + (4i+8j)N and that is what would be the answer for part a? I did that though. That was my first attempt at an answer And it came out wrong Maybe I am not...

Homework Statement Two forces, vector F 1 = (4i+ 6j) N and vector F 2 = (4i+ 8j) N, act on a particle of mass 1.90 kg that is initially at rest at coordinates (+1.95 m, -3.95 m). a)What are the components of the particle's velocity at t = 10.3 s? b) In what direction is the particle...