The Position of a Particle Moving Along the Y Axis $y=0.20 \mathrm{~m}+\left(8.0 \frac{\mathrm{~m}}{\mathrm{~s}}\right) t-\left(10 \frac{\mathrm{~m}}{\mathrm{~s}^{2}}\right) \mathrm{t}^{2}$

question 2

Multiple Choice

The position of a particle moving along the y axis has a position given by: $y=0.20 \mathrm{~m}+\left(8.0 \frac{\mathrm{~m}}{\mathrm{~s}}\right) t-\left(10 \frac{\mathrm{~m}}{\mathrm{~s}^{2}}\right) \mathrm{t}^{2}$ Is there any time interval during which the particle is not moving?

• A)Yes, from 0.60 s to 1.00 s.
• B)Yes, from 0.795 s to 0.805 s.
• C)Yes, at the time t = 0.80 s.
• D)No, the velocity is never zero.
• E)No, an instant is not the same as a time interval.

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