A cyclist starts from rest. The table shows the speed of the cyclist every 10 s:

\begin{array}{|c|c|c|c|c|c|c|c|} \hline \text{Time / s} & 0 & 10 & 20 & 30 & 40 & 50 & 60 \\ \hline \text{Speed / m s}^{-1} & 0 & 3 & 6 & 9 & 9 & 9 & 9 \\ \hline \end{array}

Which of the following correctly describes the cyclist's motion during the first 30 s and during the last 30 s?

First $s30\text{ s}$ : zero acceleration; last $s30\text{ s}$ : constant speed

First $s30\text{ s}$ : non-zero acceleration; last $s30\text{ s}$ : at rest

First $s30\text{ s}$ : non-zero acceleration; last $s30\text{ s}$ : constant speed

First $s30\text{ s}$ : zero acceleration; last $s30\text{ s}$ : at rest

A cyclist starts from rest. The table shows the speed of the cyclist every 10 s:

\begin{array}{|c|c|c|c|c|c|c|c|} \hline \text{Time / s} & 0 & 10 & 20 & 30 & 40 & 50 & 60 \\ \hline \text{Speed / m s}^{-1} & 0 & 3 & 6 & 9 & 9 & 9 & 9 \\ \hline \end{array}

Which of the following correctly describes the cyclist's motion during the first 30 s and during the last 30 s?

First $s30\text{ s}$ : zero acceleration; last $s30\text{ s}$ : constant speed

First $s30\text{ s}$ : non-zero acceleration; last $s30\text{ s}$ : at rest

First $s30\text{ s}$ : non-zero acceleration; last $s30\text{ s}$ : constant speed

First $s30\text{ s}$ : zero acceleration; last $s30\text{ s}$ : at rest

Motion

Motion Questions