Rocket in space

  • Thread starter iamwilson
  • Start date
  • #1
12
0

Homework Statement


If the rocket has an initial mass of 6000kg and ejects gas at a relative velocity of magnitude 2000m/s , how much gas must it eject in the first second to have an initial acceleration of 25.0m/s^2


Homework Equations


v=v_exln(m_0/m)


The Attempt at a Solution



i tried using momentum to solve the question
6000(2000)=Ft, t=1s, F=12000000, then F=MA,so i 12000000=25m,
m=480000
but it was not correct
then i tried to used the above v equation, but i don't have the v_ex
 

Answers and Replies

  • #2
458
0
You already have a thread on this very same question in this very same sub-forum.
 

Related Threads on Rocket in space

  • Last Post
Replies
4
Views
12K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
6
Views
1K
  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
3
Views
15K
Replies
2
Views
4K
  • Last Post
Replies
4
Views
1K
Replies
7
Views
886
Replies
5
Views
3K
Top