Energy and momentum problem

  • Thread starter fdajkffk
  • Start date
  • #1
14
0

Homework Statement


Four 63kg bobsledders psuh their sled which has a mass of 210kg when empty. They start to push over a flat frictionless surface at an initial speed of 3m/s. At intervals of 2s, each bobsledder sprints forwards at a speed of 2m/s faster than the sled's current speed and then jumps in.

What is the sled's final speed once everyone is in?


Homework Equations


p'=p


The Attempt at a Solution


m1v1=v(mtotal)
m1 is sled's mass.
 

Answers and Replies

  • #2
Spinnor
Gold Member
2,180
391
V = 3 + 2 + 2 + 2 + 2 + 2 + 2

I wrote down too many twos, how many?
 

Related Threads on Energy and momentum problem

  • Last Post
Replies
7
Views
882
  • Last Post
Replies
13
Views
1K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
6
Views
1K
  • Last Post
Replies
7
Views
1K
Replies
1
Views
1K
Replies
1
Views
4K
  • Last Post
Replies
1
Views
3K
  • Last Post
2
Replies
25
Views
559
  • Last Post
Replies
2
Views
3K
Top