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    Newspaper boat

    Homework Statement Newspaper Boat- So I have been thinking about designing a newspaper boat out of pure entertainment. I want to build a boat out of shellack, tape, and newspaper, to maximize speed (to race people in swimming pools). considering i have some amount of these supplies, what...
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    Ballistic Pendulum calculation

    Oh ok, thanks that website video really helped me, but one last problem: it did not talk about how far the bullet would travel if it were shot horizontally. Like, if it were shot off the table, how far away would it land horizontally? Would I use kinematics? If so, how? I would have the initial...
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    Ballistic Pendulum calculation

    Homework Statement So does anyone here know a lot about ballistic pendulums? I was just wondering how I could calculate the distance the ball will travel horizontally when shot horizontally, from a table. Homework Equations The Attempt at a Solution I know that first, I have to...
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    Center of Mass/Momentum

    Edit: I actually got 128 pounds, (little algebraic mistake). So, Juliet weights 128 pounds, is this correct..? Thanks!
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    Center of Mass/Momentum

    bump...please? any help?
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    Center of Mass/Momentum

    Homework Statement The question is: Romeo and Juliet are dating on a canoe in a lake. They are 4 feet apart, and Romeo wants to see how much Juliet weighs. He is on the left, Juliet on the right. So, he decides to switch spots with her. After switching, the boat moves 0.444 feet to the left...
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    Loop the loop problem

    Homework Statement So, this problem is about energy. The question is: what must the minimum height (in R) of a height be, for a ball to go down it, through a loop the loop (with radius R), and then through a rough surface 6R's long with u= 0.5. Homework Equations gravitational potential...
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