(a) VS Physics 26. A body thrown vertically up with velocity u reaches the maximum height h after T seconds. Which of the following statements is true? (a) At a height from the ground its velocity is 2 (b) At a time T its velocity is u. (c) At a time 2T its velocity is u directed downwards. (d) none of the above 27. A balloon rases up with uniform velocity 'u'. At height 'h' a body is dropped from ballon. The time of descent for the body is given by is 2h (b) h = ut +2gt (e) h=-ut+291 (d) -h = ut +gt 28. In the above problem if body is thrown down with velocity 'u' w.r.t. earth the equation for the descent time is (a) h = žgt (b) h = ut+381 (C) - h =-ut+ągt? (d) - h =-ut + 1g1 29. A car moving with constant acceleration covers the distance between two points 180 m apart in 6 sec. Its speed as it passes the second point is 45 m/s. What is its acceleration and its speed at the first point (a) - 5 m/s2; 15 m/s 33. A bullet fired into a fixed target 1 velocity in penetrating 15 cm. How will penetrate before coming to rest (a) 5 cm (b) 15 cm (c) 7.5 cm (d) 10 cm 34. A bus starts from rest with a const of 5m/s2. At the same time a cart constant velocity 50 m/s over-take bus. How fast is the bus travelling side by side? (a) 10 m/s (b) 50 m/s (c) 100 m/s (d) none 35. A body falls from 80 m. Its tim [g = 10ms) (a) 3s (6) 45 (c) 55 (d) 6s 36. Two bodies whose masses are are dropped simultaneously at ty B where the accelerations due ga and ge respectively. If they simultaneously, the ratio of the he they are dropped is (a) gags (b) 2g: (c) ga: 2ge (d) gA 37. A body falls for (ん)
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