question_answer 28)

The velocity-time graph of particle in one-dimensional motion is shown in Fig. 3.97.     Fig. 3.97             Which of the following formulae are correct for describing the motion of the particle over the time interval  to : (a) (b)   (c)   (d) (e) . (f)  area under the v-t curve bounded by the t-axis and the dotted line shown.  

Answer:

(a) It is not correct because in the time interval between and is not constant. (b) This relation is also not correct for the same reason as in (a). (c) This relation is correct. (d) This relation is also correct. (e) This relation is not correct because average acceleration cannot be used in this relation. (f) This relation is correct.