physics question help please?

3 Answers

• kash

  1 month ago

  1.8 m/s

  This is a conservation of momentum question.

  The initial momentum= p = mv = (9 kg)(5.5 m/s)

  The final m(total)v is equal to this as well, and would be

  (9 + 18)v = (27)v = 9(5.5)

  v = 5.5/3 = 1.8 m/s

  0
• mjasper33

  1 month ago

  Conservation of momentum problem. Look it up in your physics book, but i believe it is:

  m1*v1 = m2*v2

  so,

  9kg*5.5m/s = (9kg+18kg)*v2

  =1.83 m/s

  Of course this assumes a perfectly elastic collision with NO friction between the cart and ground.

  1
• oscar m

  1 month ago

  2.2 m/s

  0