Two carts with masses of 4.3 kg and 3.2 kg(adsbygoogle = window.adsbygoogle || []).push({});

move toward each other on a frictionless track

with speeds of 5.8 m/s and 4.5 m/s, respec-

tively. The carts stick together after colliding

head-on.

Find their final speed. Answer in units of

m/s.

I plugged in the numbers into this equation

(4.3)(5.8) + (3.2)(4.5) = (4.3+3.2)Vf

39.34 = 7.5Vf

5.2453 = Vf

That apparently isn't the correct answer =/

**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!

# Homework Help: Momentum Word Problem.

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