126. A bullet fired into a fixed target loses half of its velocity after penetrating 3 cm. If it faces constant resistance to motion further, it will penetrate X distance before coming to rest. Here X is (1) 1 cm. (3) 2.0 cm (2) 1.5 cm (4) 2.5 cm 127. Two parallel rail tracks run north-south. Train A moves north with a speed of 15 ms and train B moves south with a speed of 25 ms. What would be the velocity of a monkey running on the roof of the train A against its motion (with a velocity of 5 ms with respect to the train A) as observed by a man standing on the ground? (1) 5 ms towards north (2) 5 ms towards south (3) 15 ms towards south (4) 10 ms towards north 128. For two vectors A and B, |A+B = |X-B, is is always true when (1)| = |B|0 (2) ALB = (3) A B0 and A and B are parallel. (4) A B0 and A and B are anti-parallel. 129. If magnitude of two vectors are 7 and 3 respectively, which of the following could not be magnitude of resultant of these two vectors? (1) 3 (3) 5 130. Table-I A. N mg (2) 4 (4) 7 Table-II i. Elevator is moving upward with increasing velocity. B. N>mg ii. Elevator is moving with constant velocity. C. N