A smooth spherical particle with mass 2.5 kg collides with a second smooth spherical(adsbygoogle = window.adsbygoogle || []).push({});

particle of mass 6kg. Before the collision, the ﬁrst particle has velocity 9ms^1

in the positive x-direction while the second particle has velocity 6ms^1 in the positive y-direction. At the instant of collision, the particles are so that the normals to their surfaces at the point of contact are ±n, where n

is a unit vector inclined at -pi/4 from the x-axis as shown. You may assume that the coeﬃcient of restitution e = 2/3 and that no other forces are involved. Determine the velocities v1,1 and v2,1 of the ﬁrst and second particles respectively, immediately after the collision.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Collisions mechanics question

**Physics Forums | Science Articles, Homework Help, Discussion**