(a)[1]
Find the retardation at $t=10$.
(b)[2]
Find the distance covered by the car from $t=0$ to $t=20$.
(c)[2]
The distance covered by the car from $t=20$ to $t=k$ is $60\text{ m}$. Find the value of $k$.
Mathematics 4024 · O Level · Graphs in practical situations
Graphs in practical situations — practice question
The diagram depicts the speed-time graph of a car that reduces its speed from $30\text{ m s}^{-1}$ to $12\text{ m s}^{-1}$ over $20$ seconds, and then continues at $12\text{ m s}^{-1}$.