Recent content by ilanmichaeli

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    Kinematics problem: x(t) --> v(t) --> a(t)

    thanks anyway for your time. both of you.
  2. I

    Kinematics problem: x(t) --> v(t) --> a(t)

    it's from a collection of problems of kinematics, up to this question i could solve everything they asked because there wasn't any calculus involved, but from this one and on every thing looks kinda messy :)
  3. I

    Kinematics problem: x(t) --> v(t) --> a(t)

    if i still don't know any calculus i don't have any hope for solving this problem? because that's the case unfurtunately
  4. I

    Kinematics problem: x(t) --> v(t) --> a(t)

    thanks for your help and regarding to what you've said i would use v=s/t for velocity and a=v/t for acceleration. in fact i did try to divide that expression by time (using v=s/t) but it just didn't work out for me unless I'm doing it wrong.. :(.
  5. I

    Kinematics problem: x(t) --> v(t) --> a(t)

    1. Problem statement: an object moves along the x-axis so it's position at any given moment is x(t) = −t3(to the third power) + 6t − 12 m. a. what is it's velocity at any given moment b. what is it's acceleration c. at what moment does the object stopsHomework Equations s=vt+1/2at2 The Attempt...
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    Momentum and Conservation of Momentum Problem

    thank you, sorry.. i tried to make it as organized as i could.. the thing that was hard for me the most was to find what's the horizontal velocity and velocity for the second particle.
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    Momentum and Conservation of Momentum Problem

    Homework Statement hello. i tried to solve for the problem, which was quite difficult for me and I'm not sure whether i approached it correctly, so if someone will help me figure it out thank you! the problem: 1. a 2 kg firework is shot vertically, at v=50 m/s a. what is the velocity and...
  8. I

    Why are compound formulas written in a specific order?

    thanks a lot!
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    Why are compound formulas written in a specific order?

    Hello, i am studying about ions and compounds currently and i wonder why do certain formulas are written in a certain order, for example: silver sulfide - why isn't it written as sulfide silver? or copper(II) chloride - could the chloride be written first? like everything in chemistry I'm sure...
  10. I

    'forces in two dimensions' problem

    thanks, i feel stupid.. well i didn't make it before because i thought they ask for two answers.. :(
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    'forces in two dimensions' problem

    Homework Statement hello guys, that's the problem, when i tried to solve it using soh cah toh and Pythagoras law it resulted in answers e' and f', which make sense to me because both result it 54.6N and both relevant in directions so i am a bit confused.[/B] Suppose that a force with a...
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    Hello, i'll be very glad to get some help with this question

    will do!
  13. I

    Hello, i'll be very glad to get some help with this question

    it's on the added picture below, i tried to solve for it with answers ef but it says it's wrong, so if you can please help :)
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