question_answer

The distance travelled by four different bodies varies with time as shown below. In which case is the acceleration of the body a minimum? (i)                 (ii) (iii)          (iv)

Answer:

In (i) \[s\propto t,\] velocity = constant, acceleration, = 0 In (ii), Rate of increase of s with t is high In (iii), Rate of increase of s with t is low. Hence acceleration is negative i.e. minimum in(3) In (iv), s = constant, velocity = 0, acceleration = 0