Collisions and Energy Transfers

Are you looking for homework help? If so, keep this in mind. We can give you the answer, but will getting it the easy way make you a better engineer? No.

http://en.wikipedia.org/wiki/Conservation_of_momentum#Conservation_of_momentum

In a collision, two bodies energies are added. Hence, the other body in this situation was deflected by 2.2m/s.

Javed

If this is a homework question, coffee must have got spilt on it or something. I don't see enough data to make a solvable problem. Masses? Coeff of restitution/inelastic?

I think he said the bodies are the same mass, but I agree that the coefficient of restitution does matter.

Wait I've got it!!!

The two bodies are traveling in "opposite direction"...away from each other. However, (in my world) one ran into a wall that absorbed a slight amount of energy. So (neglecting friction) mass 1 is still traveling at 2 m/s and mass 2 is now traveling at 1.8 m/s.

Isn't it great how making your own assumptions can simplify the problem!!

(Yes this probably does qualify as off-topic, but I will let you guys vote on it.)

They could also be on a train moving at 1.8m/s and when the two bodies collide they come to rest relative to one another. So both bodies are now travelling at 1.8m/s relative to the earth.