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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The Answer of 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.

The Position of a Particle Moving Along the Y Axis y=0.20 m+(8.0 m s)t−(10 m s2)t2y=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}y=0.20 m+(8.0 s m​)t−(10 s2 m​)t2

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