Recent content by Roberta314

  1. Roberta314

    Self-propelled car by launching projectile backward

    I just built a prototype, although the issue is the mouse trap catapult doesn't seem to be strong enough to propel the car 6m. I am thinking of just buying a bigger mouse trap, but that will for sure increase the weight of the car. So do you have anything suggestions on what else I might be able...
  2. Roberta314

    Self-propelled car by launching projectile backward

    Since my car only has to travel 6m, I think as long as I have a good wheel and axel design the energy from the just a simple mousetrap catapult should be enough for it to make it that far.
  3. Roberta314

    Self-propelled car by launching projectile backward

    Would increasing the length of the catapult arm(having it launch at at higher spot) allow it to go further?
  4. Roberta314

    Self-propelled car by launching projectile backward

    So far my idea is to build a catapult using a mouse trap and just attach that onto my car. And I looked into that scene from "Wrath of Khan" but I can't seem to pick out something from there than relates to my project.
  5. Roberta314

    Self-propelled car by launching projectile backward

    Hmm I haven't seen that movie, could you care to elaborate a bit more on that idea for propulsion?
  6. Roberta314

    Self-propelled car by launching projectile backward

    Which one of these would be easier to build? To me the silly putty seems to be a better option but I can't really find any clear instructions on how to make one.
  7. Roberta314

    Self-propelled car by launching projectile backward

    There are no dimension requirements other than the max weight. So far I can only think ways to launch the projectile (catapult, sling shot, spring, etc.). My thought is that if I can launch a heavy projectile at a decently fast speed which keeping the car light it will travel faster and further...
  8. Roberta314

    Self-propelled car by launching projectile backward

    Oh yes thanks for reminding me I just edited the requirements. And the attachment must have been an accident I didn't want to attach anything.
  9. Roberta314

    Self-propelled car by launching projectile backward

    Hey guys I'm currently working on a school physics project and I need some ideas for it. So basically the goal of the project is to create a vehicle that has to propel itself forward by firing a projectile backwards. The vehicle will be judged based on a scoring system that includes 3 criteria...