question_answer

A lizard, at an initial distance of 21 cm behind an insect, moves from rest with an acceleration of \[2cm/{{\sec }^{2}}\]and pursues the insect which is crawling uniformly along a straight line at a speed of 20 cm/sec. Then, the lizard will catch the insect after _________.

A)  24 sec             

B)  1 sec

C)  21 sec

D)  20 sec

E)  None of these