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    Vector and Acceleration

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    ** Please see the attached file for the complete problem description **

    Velocity and acceleration: consider a velocity vector given in standard unit vector form in rectangular Cartesian coordinates as ____ (please see the attached file).
    a. What is the acceleration at 2 seconds?
    b. What is the displacement at 5 seconds?
    c. What is the angle between the displacement and the acceleration at t=2.0s?
    d. What is the velocity of the vector at 2 seconds?
    e. What is the magnitude of the displacement at 5 seconds?

    © BrainMass Inc. brainmass.com October 10, 2019, 7:04 am ad1c9bdddf
    https://brainmass.com/physics/physics-measurements/vector-acceleration-567363

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    Solution:

    Velocity vector v(t) = 3t4 i + 7t5/2 j + 5e2t k .....(1)

    Displacement vector s(t) = ∫(3t4 i + 7t5/2 j + 5e2t k) dt

    s(t) = 3∫(t4 dt ) i + 7∫(t5/2 dt) j + 5∫e2t dt) k

    s(t) = 3(t5/5) i + 7 x (2/7) t7/2 j + 5 (e2t/2) k

    s(t) = 3t5/5 i + 2t7/2 j + 5e2t/2 k ......(2)

    Acceleration vector a(t) = dv/dt = d/dt(3t4 i + 7t5/2 j + 5e2t k)

    a(t) = 3x4t3 i + 7x5/2xt3/2 j + 5x2xe2t k

    a(t) = 12t3 i + 35/2xt3/2 j + 10e2t k ...

    Solution Summary

    This solution involves time varying displacement, velocity and acceleration vectors. For a given velocity vector, expressions for the displacement and acceleration vectors have been derived and evaluated for different time instants.

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