(a) The graph shows the speed of a vehicle during the first 40 seconds of motion.
Calculate the distance travelled by the vehicle during the 40 seconds. [3]
(b) The graph shows the distance travelled by a particle over 6 seconds.
(i) Work out the average speed of the particle between 2 and 4 seconds. [2]
(ii) Estimate the speed of the particle at 4 seconds. [4]
Mark scheme (a)
Answer
Marks
Part marks and guidance
975
3
M2 for \((\frac{40 + 25}{2}) \times 30\) oe or \(\frac{1}{2} \times 15 \times 30 + 25 \times 30\) or M1 for one relevant area e.g. \(\frac{1}{2} \times 15 \times 30\) or 25 × 30 or 40 × 30
