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Calculus

Find the velocity, v(t), for an object moving along the x-axis in the acceleration, a(t), is a(t)=cos(t)-sin(t) and v(0)=3

a) v(t)=sin(t) + cos(t) +3
b) v(t)=sin(t) + cos(t) +2
c) v(t)= sin(t) - cos(t) +3
d) v(t)= sin(t) - cos(t) +4

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Alice

  1. a = cost - sint = dv/dt
    so, v = sint + cost + C
    now solve v(0) = 3 to find C

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    oobleck

  2. so will be answer A, right?

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    Alice

  4. NO!
    sin(0) + cos(0) + C = 3

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    oobleck

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