(a)[2]
The car's retardation is $0.4\,\text{m s}^{-2}$. Determine the value of $v$.
(b)[2]
Calculate the distance covered by the car from $t = 0$ to $t = 25$.
Mathematics 4024 · O Level · Graphs in practical situations
Graphs in practical situations — practice question
The speed-time graph shown represents 25 seconds of a car journey. Starting at a speed of $v\,\text{m s}^{-1}$, the car decreases uniformly to $12\,\text{m s}^{-1}$ in 15 seconds. It then keeps a constant speed for another 10 seconds.