hey, just need help on this question. i know the answer but i need all the working out as i have a test tommorrow and dont understand how and when to use the equations of motion and change in momentum etc.(adsbygoogle = window.adsbygoogle || []).push({});

A 3.0kg mass moving at 4.0ms at 135degress collides with a 4.0kg mass moving at 2.0ms at 315 degrees. The collision occurs over 0.20s and the 3.0kg mass is measured to be moving off at 1.0ms at 135 degrees. Find:

a) the final velocity of the 4.0kg mass

b) the acceleration of the 3.0kg mass

c) The force acting on each mass.

Thanks a lot people!

**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!

# Force and momentum

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