Hello All, I have a question that i cant seem to get.(adsbygoogle = window.adsbygoogle || []).push({});

If someone could help me get started on part a that would be great.

So far i have tryed using P =m1v1 and cant seem to find any other equations that would help with the problem.

Any help is great!

Thank You

Problem:

A cart with mass 390 g moving on a frictionless linear air track at an initial speed of 1.2 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision, the first cart continues in its original direction at 0.57 m/s.

(a) What is the mass of the second cart?

grams

(b) What is its speed after impact?

m/s

(c) What is the speed of the two-cart center of mass?

m/s

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

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!

# The Linear Momentum of a System of Particles

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