Math
posted by Darren .
A particle A of mass 2.11 kg collides with another particle B of mass 3.86 kg. Their initial velocities are u1 = 2.16i + 0.88j and u2 = 0.7i + 1.12j just before impact. After collision, they both merged and becomes a composite particle, which travel with a velocity of V.
Calculate the speed V, a scalar, in ms1. Give your answer to 3 decimal places.

the momentum of the center of mass stays constant.
p1 = m1*u1 = 4.5576i + 1.8568j
p2 = m2*u2 = 2.7020i + 4.3232j
p = p1+p2 = 7.2596i + 6.1800j
p = 9.5338
v = p/(m1+m2) = 1.597 m/s
Respond to this Question
Similar Questions

physics helpppp
particle 1 of mass m1 = 0.29 kg slides rightward along an x axis on a frictionless floor with a speed of 1.8 m/s. When it reaches x = 0, it undergoes a onedimensional elastic collision with stationary particle 2 of mass m2 = 0.40 … 
Physics please help
A particle of mass m1, traveling at speed v0, collides headon with a particle of mass m2 at rest. The collision is perfectly inelastic, i.e., the particles fuse together at the collision. Calculate the fraction of the initial kinetic … 
physics
A particle of mass m and initial velocity v collides elastically with a particle of mass M coming from opposite direction.After collision m has velocity V/2 at right angles to incident direction and M moves at an angle of 45 degree … 
physics
A particle makes a headoncollision with an unknown particle at rest.The proton rebounds back with 4/9 of its initial kinetic energy.Find the ratio of mass of unknown particle to mass of proton assuming the collision to be elastic. 
physics emergerncyy!
A particle of mass m1 = 2.5 kg moving along the x axis collides with a particle of mass m2 = 4.7 kg initially at rest. The incoming particle is deflected in the direction 24 degrees above the x axis, whereas the target particle moves … 
physics
A particle of mass and initial velocity strikes a stationary particle of mass . The collision is elastic. It is observed that after the collision the particles have equal and opposite velocities: Find (a) the ratio ; (b) the velocity … 
College Physics
Two pucks traveling at each other collide and deflect at 30.0° angles from their original velocities. The mass of Puck B is 20% greater than the mass of Puck A. Before colliding, the pucks approach each other with momenta of equal … 
Physics
Two particles approach each other with equal and opposite speed v. The mass of one particle is m, and the mass of the other particle is nm, where n is just a unitless number. Snapshots of the system before, during, and after the elastic … 
Physics
Two particles, of mass m and mass nm, undergo a headon, fully elastic collision. (Here n is just a unitless number.) Before colliding the particles approach one another with equal speed v. Snapshots of the particles before, during, … 
Physics
Particle 1 of mass 3m initially moving with a speed v0 in the positive xdirection collides with particle 2 of mass m moving in the opposite direction with an unknown speed v.After collision,particle 1 moves along the negative ydirection …