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Use the equations below. (Note that the direction is indicated by the sign in front of the equations.)

x = (0.0553 m) cos(4.094t + 0.14π)

v = −(0.226 m/s) sin(4.094t + 0.14π)

a = −(0.927 m/s2) cos(4.094t + 0.14π)

(a) Determine the first time (t > 0) that the position is at its maximum (positive) value.

s

(b) Determine the first time (t > 0) that the velocity is at its maximum (positive) value.

s

i have no idea where to start, or how to do this.

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