Conservation of momentum in an inelastic collision

  • Thread starter Runaway
  • Start date
  • #1
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Homework Statement



Two identical sticky masses m are moving in
the xy-plane, with their momenta at an angle
of φ with one another. They are each moving
at the same speed v when they collide at the
origin of the coordinates and stick together.
After the collision, the masses move at an
angle −θ2 with respect to the +x axis at
speed v/2

a. pi/3
b. zero
c. 140°
d. 2pi/3
e. 110°
f. 45°

fuz6t1.jpg


Homework Equations


p=mv
pi=pf

The Attempt at a Solution


I have no idea where to start
 

Answers and Replies

  • #2
vela
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There are no external forces, so you know that momentum is conserved. Start by writing the conservation of momentum equations for both the x and y directions, breaking vectors into components if necessary.
 

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