Recent content by teeheehee

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    Turntable Problem: Homework Solution

    Kinetic energy?
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    Turntable Problem: Homework Solution

    Momentum? Inertia? Honestly I have no clue of where to start here.
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    Turntable Problem: Homework Solution

    Homework Statement A large turntable of radius 6 m and moment of inertia I = 500 kg m^2 about its center is rotating with an angular velocity of 1 radian/s. A girl of mass 30 kg standing at the exact center moves slowly outward to the edge of the turntable. a) What is the angular...
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    Investigating Energy Transfer in a Collision Between Two Cars

    Their mass becomes one?
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    Investigating Energy Transfer in a Collision Between Two Cars

    Oh! It's because velocity changes, right?
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    Investigating Energy Transfer in a Collision Between Two Cars

    Thanks! That was easier than I expected. What about part d? Why isn't kinetic conserved? This concept never really made much sense to me.
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    Investigating Energy Transfer in a Collision Between Two Cars

    A car of mass m moving East at speed v (v << c no need to use relativity) collides with another car of mass 2 m moving North with speed 3v. a) What are the x and y components of the center of mass velocity of the system just before the collision? b) If the cars stick together during the...