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  • Can a Model Rocket reach space? - Physics Forums
    Getting a rocket (model or otherwise) into space is a matter of thrust and time The engines most model rockets have have enough thrust, but not for enough time, and engines that do have enough thrust for enough time can't (yet) be made small and light enough to be used in model rockets
  • What maximum altitude does the rocket reach - Physics Forums
    A rocket rises vertically, from rest with an acceleration of 3 2 m s until it runs out of fuel at an altitude of 1200 m After this point, its acceleration is that of gravity, downward (a) what is the velocity when it runs out of fuel (b) How long does it take to reach this point
  • What is the maximum height reached by the rocket? - Physics Forums
    A model rocket is launched straight upward with an initial speed of 49 5 m s It accelerates with a constantupward acceleration of 1 83 m s^2 until its engines stop at an altitude of 132 0 m A What is the maximum height reached by the rocket? B How long after lift-off does it take for the rocket to reach its maximum height?
  • Model Rocket: Max Height Flight Duration - Physics Forums
    A model rocket is launched straight upward with an initial speed of 45 6 m s It accelerates with a constant upward acceleration of 1 5 m s^2 until its engines stop at an altitude of 180 5 m What is the maximum height reached by the rocket? Answer in units of m How long after lift-off does the rocket reach its maximum height? Answer in units
  • Can a Balloon Platform Reach Outer Space? - Physics Forums
    The balloons can reach altitudes over 100,000 feet before bursting to shreds and parachuting back to Earth with their payloads At that altitude, atmospheric pressure is a mere 1 percent of what it is at sea level and the radiation many times greater Temperatures can reach -90 degrees F " The only thing that limits these flights is the balloon
  • Could a rocket come close to the speed of light? - Physics Forums
    This is incorrect It's not possible for a rocket to reach 100% the speed of light, but it IS possible for it to reach 99% There is a HUGE distinction there Even 99 999999999999999999% is possible (theoretically) If you were measuring the speed of this magical rocket from earth, it need not stop accelerating
  • Kinematics in 1D - Model Rocket Question - Physics Forums
    A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 76 0 m s2 for 1 54 seconds, at which point its fuel abruptly runs out Air resistance has no effect on its flight What maximum altitude (above the ground) will the rocket reach? Segment 1 Known Values: Vo 1 = 0 m s a 1 = 76 0
  • Energy required to reach Escape Velocity - Physics Forums
    A small rocket but let's say the whole thing payload + the rocket's materials weigh 50kg Let's ASSUME for now the fuel will be weightless and adding it to the rocket will not bring it's total weight up at all How much fuel needs to be burnt simultaneously for a 50kg rocket to reach 11 2km s
  • What Is the Maximum Height a Rocket Will Reach After Engine Failure?
    A 7400 kg rocket blasts off vertically from the launch pad with a constant upward acceleration of 2 15 m s^2 and feels no appreciable air resistance When it has reached a height of 560 m, its engines suddenly fail so that the only force acting on it is now gravity a What is the maximum height this rocket will reach above the launch pad? b
  • Why cant we reach to Speed of light at Space? - Physics Forums
    Let us assume that building a rocket at 96% propellant (4% rocket), currently the limit for just the Shuttle External Tank, is the practical limit for launch vehicle engineering Let us also choose hydrogen-oxygen, the most energetic chemical propellant known and currently capable of use in a human rated rocket engine





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