Rocket Height

  • Thread starter Turtlie
  • Start date
  • #1
6
0

Homework Statement


A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 53.9 m/s^2. The acceleration period lasts for time 7.00 s until the fuel is exhausted. After that, the rocket is in free fall.

Find the maximum height ymax reached by the rocket. Ignore air resistance and assume a constant acceleration due to gravity equal to 9.80 m/s^2 .

The Attempt at a Solution


I got 2,641m, but it says that the rocket will still be moving upwards after the fuel is lost. How would I find how far the rocket goes after it runs out of fuel?
 

Answers and Replies

  • #2
114
0
From the moment the fuel finishes, only one force acts upon the rocket: gravity.
So find the the velocity the rocket possesses after those 7 seconds of propulsion and then use the constant acceleration formulae to find the height at which the rocket has v=0.


R.
 

Related Threads on Rocket Height

  • Last Post
Replies
11
Views
4K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
10
Views
2K
  • Last Post
Replies
9
Views
5K
  • Last Post
Replies
4
Views
16K
  • Last Post
Replies
5
Views
1K
Replies
1
Views
636
  • Last Post
2
Replies
25
Views
16K
Replies
1
Views
3K
Replies
1
Views
2K
Top