The velocity of a cyclist changes as follows:
(i) increases uniformly from 0 to 12m/s in 4s,
(ii) remains constant for the next 6s,
(iii) decreases uniformly to 0 in the next 3s.
Which option correctly lists the accelerations during segments (i), (ii) and (iii) respectively?
a) 12m/s2,0,−4m/s2
b) 3m/s2,0,−2m/s2
c) 3m/s2,0,−4m/s2
d) 4m/s2,0,−3m/s2