Rocket's forces and acceleration

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SUMMARY

The discussion focuses on calculating the resultant force and acceleration of a rocket with a mass of 3.04x106 kg and a thrust force of 3.40x107 N. Participants emphasize the importance of considering gravitational force in the calculations. The initial acceleration can be derived from Newton's second law, while the average acceleration after reaching a speed of 2390 m/s in 150 seconds is also discussed. The conversation highlights the necessity of showing work for effective assistance in problem-solving.

PREREQUISITES
  • Understanding of Newton's second law of motion
  • Knowledge of gravitational force calculations
  • Familiarity with basic kinematics
  • Ability to perform unit conversions and calculations involving scientific notation
NEXT STEPS
  • Calculate the resultant force using the formula F = ma, incorporating gravitational force
  • Learn how to derive initial acceleration from thrust and weight
  • Study average acceleration calculations over time intervals
  • Explore real-world applications of rocket thrust and acceleration in aerospace engineering
USEFUL FOR

Students studying physics, particularly those focused on mechanics, as well as educators and anyone interested in understanding the dynamics of rocket propulsion and acceleration.

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Homework Statement



A rocket has a mass of 3.04x10(6)kg. It takes off vertically with a thrust force of 3.40x10(7)N.

Find:

(a) The resultant force.
(b) The initial acceleration
(c) After reaching a speed of 2390ms(-1) after 150seconds, the average acceleration.

Homework Equations



/

The Attempt at a Solution



I'd really appreciate someone to provide some help with this, I'm quite stuck :(

Thanks :)
 
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What other forces are acting on the rocket?
 
jegues said:
What other forces are acting on the rocket?

Gravity.
 
So why are you having trouble calculating the resultant force? Did you even try the problem... Next time make an attempt at the solution otherwise you're not going to learn anything.
 
jegues said:
So why are you having trouble calculating the resultant force? Did you even try the problem... Next time make an attempt at the solution otherwise you're not going to learn anything.

Jegues,

Of course I attempted it, but I do not understand it. Hence why I am asking for assistance.

Thank you.
 
If you attempted it and are having troubles, show us your work.

We will help you work through your sticking points.
 
jegues said:
If you attempted it and are having troubles, show us your work.

We will help you work through your sticking points.

Hi Jegues,

I seem to have worked out that, I'm going to check the answers and if it's wrong I'll reply to this thread to see where I've gone wrong.

Thanks!
 
No problem.
 

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