The velocity of a cyclist changes as follows:

PHYSICS · Single correct · CBSE · Physics · Motion · Motion

Problem

The velocity of a cyclist changes as follows: (i) increases uniformly from 00 to 12 m/s12\,\text{m/s} in 4 s4\,\text{s}, (ii) remains constant for the next 6 s6\,\text{s}, (iii) decreases uniformly to 00 in the next 3 s.3\,\text{s}. Which option correctly lists the accelerations during segments (i), (ii) and (iii) respectively? (a) 12 m/s2,  0,  −4 m/s212\,\text{m/s}^2,\;0,\;-4\,\text{m/s}^2 (b) 3 m/s2,  0,  −2 m/s23\,\text{m/s}^2,\;0,\;-2\,\text{m/s}^2 (c) 3 m/s2,  0,  −4 m/s23\,\text{m/s}^2,\;0,\;-4\,\text{m/s}^2 (d) 4 m/s2,  0,  −3 m/s24\,\text{m/s}^2,\;0,\;-3\,\text{m/s}^2

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