Recent content by Akuu

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    Law to preserve motion quantity help ( picture included to help describe )

    Wait a sec let's see... m1v1 + m2v2 = m1u1 + m2u2 : v2=0 m1v1 = m1u1 + m2u2 : Is it safe to assume u1 and u2 are the same since they become, like, 1? then - m1v1 = (m1+m2)u v1 = (m1+m2)u/m1 Now is it that the Kinetic energy appears at the HIT, and turns into Potential energy when it...
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    Law to preserve motion quantity help ( picture included to help describe )

    I get this: m1v1 = m1u1+m2u2 v1 = u1+(m2u2/m1) And also this: v1 = sqr(2gh) (= 1.3139... ) sqr(2gh) = u1+m2u2/m1Now I can't do anything with this because u1 and u2 are still undefined. You need to know the lengths of the ropes or something. Grrr. Wait. When exactly does the Kinetic energy...
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    Law to preserve motion quantity help ( picture included to help describe )

    Speed of a bullet shot into a pendulum ,picture included (dl attch. if pic won't show) Homework Statement You're supposed to be able to define the speed of a bullet with the help of a pendulum. The bullet is shot into a big tree piece ( The pendulum ) with a known mass (weight). The tree...