Study the velocity-time graph and calculate.
(i) the acceleration from A to B.
(ii) the acceleration from B to C.
(iii) the distance covered in the region ABE.
(iv) the average velocity from C to D.
(v) the distance covered in the region BCFE.
(i) Acceleration from A to B = = = 8.33 m/s2
(ii) Acceleration from B to C = = -10 m/s2
(iii) Distance covered in the region ABE = × base × height
= × 3s × 25 m/s
= 37.5 m
(iv) Average velocity from C to D =
= = 7.5 m/s
(v) Distance covered in the region BCFE = × sum of parallel sides x distance between them = × ( 25+15) × 1 = 20 m