14 The graph below models the velocity of a small train as it moves on a straight track for 20 seconds.
The front of the train is at the point \(A\) when \(t = 0\)
The mass of the train is 800 kg .
\includegraphics[max width=\textwidth, alt={}, center]{a57b0526-cf9c-44d6-a349-cac392f85a70-22_645_1374_699_479}
14
- Find the total distance travelled in the 20 seconds.
14 - Find the distance of the front of the train from the point \(A\) at the end of the 20 seconds.
[0pt]
[1 mark]
14 - Find the maximum magnitude of the resultant force acting on the train.
[0pt]
[2 marks]
14 - Explain why, in reality, the graph may not be an accurate model of the motion of the train.