Easy -1.2 This is a straightforward SUVAT application with clearly defined stages and all parameters given. Students simply apply v=u+at for each stage, sketch the trapezoid, and calculate area. It requires only routine recall of basic kinematics formulas with no problem-solving insight or algebraic manipulation.
1 A bus moves in a straight line between two bus stops. The bus starts from rest and accelerates at \(2.1 \mathrm {~m} \mathrm {~s} ^ { - 2 }\) for 5 s . The bus then travels for 24 s at constant speed and finally slows down, with a constant deceleration, stopping in a further 6 s . Sketch a velocity-time graph for the motion and hence find the distance between the two bus stops.
1 A bus moves in a straight line between two bus stops. The bus starts from rest and accelerates at $2.1 \mathrm {~m} \mathrm {~s} ^ { - 2 }$ for 5 s . The bus then travels for 24 s at constant speed and finally slows down, with a constant deceleration, stopping in a further 6 s . Sketch a velocity-time graph for the motion and hence find the distance between the two bus stops.
\hfill \mbox{\textit{CAIE M1 2019 Q1 [5]}}