Need some help with this problem, I can\'t figure out how to get theanswer. Any

Question

Need some help with this problem, I can't figure out how to get theanswer. Any help would be greatly appreciated. I have the answersand have tried to work the problem out several times, but I can'tfigure out how to get them.

A 3.00kg object moving in the positive x-direction with a velocityof +5.00 m/s collides with and sticks to a 2.00kg object initiallymoving in the negative y-direction with a velocity of -3.00 m/s.Find the components of velocity of the composite object.

The answers are : V(fx) = 3.00 m/s    V(fy) = -1.20m/s

Again, I just need someone to go through the processmathematically. Thanks

Explanation / Answer

This question is a combination of vectors and the law ofconservation of momentum.    m1 =3kg   ;   v1= + 5 m/s i    m2 =2kg   ;   v2= - 3 m/s j Now we use the law of conservation of momentum. for completely inelasticcollisions:-      m1v1+ m2v2 =( m1 + m2) v                                                          (3)(5m/si) + (2)(-3m/s j) = (3+2)v                                                             15m/si   - 6m/sj         =    5 v                                                                                                                         v= 15m/s i - 6m/s j                                                                                   5                                                                  v  = 3 m/s i - 1.2 m/s j Hope this makes it clear.......Good Luck :-) Hope this makes it clear.......Good Luck :-)

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---