Rocket Launch Question: Calculating Height After 1.5s with Given Mass and Force

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SUMMARY

The discussion centers on calculating the height of a rocket with a mass of 0.5 kg that experiences a constant upward force of 22 N for 1.5 seconds. The net upward force is determined to be 17 N after accounting for the downward gravitational force (mass times gravity). Participants emphasize the importance of using a free body diagram to analyze the forces acting on the rocket to derive the maximum height achieved during the burn period.

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  • Understanding of Newton's Second Law of Motion
  • Basic knowledge of free body diagrams
  • Familiarity with gravitational force calculations
  • Concept of kinematic equations for uniformly accelerated motion
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  • Calculate the maximum height using kinematic equations with the net force of 17 N
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Homework Statement


A rocket of mass 0.5kg is shot vertically and burns for 1.5s, providing a constant force of 22N.


After 1.5s what is the height of the rocket above the ground?


The Attempt at a Solution



by taking m*g of the rocket (downwards force) away from the 22N force (upwards).
I figured the resulting upwards force = 17N

unsure how i use this to get the maximum height though
 
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Start with a free body diagram. What are the forces acting on the body? What is the resultant of these forces?
 

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