Solution 6.3c
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(New page: This question can be solved by examining the curve. The lift has a speed of <math>1 \text{ m}{{\text{s}}^{\text{-1}}}</math> halfway in the first part and halfway in the third part. Insp...)
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This question can be solved by examining the curve.
The lift has a speed of \displaystyle 1 \text{ m}{{\text{s}}^{\text{-1}}} halfway in the first part and halfway in the third part.
Inspection gives
\displaystyle \frac{3}{2}=1 \textrm{.}5 \text{ s}
and
\displaystyle 7+\frac{9-7}{2}=8 \text{ s}