Physics · Oct / Nov 2017 · Paper 11 · Question 4

An object travels for 20 s with a constant speed of 10 m / s. For the next 10 s, it accelerates uniformly to 20 m / s. [graph: speed / m/s against time / s, horizontal line at 10 from 0 to 20 s, then straight line rising to 20 at 30 s] What is the total distance travelled by the object in the 30 s?

1. A300 m
2. B350 m
3. C400 m
4. D450 m

As printed in the paper