General Sceience
(Part-2)
38. when the velocity of a body increase with time then its
Ans: Positive
39. When the velocity of a body decreases with time then its acceleration is -
Ans: Negative
40. If velocity of a body is decreasing then the acceleration is called-
Ans: Retardation or deceleration
41: What is the acceleration of a body moving with constant velocity
Ans: Zero
42. On applying a constant force to a body its move with uniform
Ans: Acceleration
43. A body moves with a constant speed along a curved path its acceleration is
Ans: Perpendicular to its velocity
44.The body executing free falling motion have
Ans: Equal acceleration
45. An iron ball and wooden ball of the same radius are released from the same height in a vacuum. The time taken by both of the these to reach the ground is
Ans: Exactly equal
46. When two bodies are moving in the straight line, the speed of one with respect to another is known as its
Ans: Relative speed or velocity
47. When a rock thrown straight upward gets to the expect top of its path, its
Ans: velocity is zero and Acceleration is about 10 m/s²
48. A body given with an initial velocity moved under the effect of gravity is called
Ans: Projectile
49.The path of projectile is a
Ans: Parabola
50.The achieve maximum range the body should be projected at an angle-
Ans : 45°
51. To achieve maximum range the body should project at an angle of -
Ans: 90°
52 A bullet fired from a gun making an angle of 45° with the earth's surface follows a-
Ans : Parabola Path
53. The motion in which a particle moves along a straight line is called
Ans: Rectilinear motion
54. The motion in which particle moves along a circular path, is called-
Ans: Circular motion
55. If an object moves along a circular path with uniform speed , then its ,motion is called-
Ans: Uniform circular motion
56. If an object undergoes a uniform circular motion, then what will be changes-
Ans: Its velocity
57. The time required for one complete revolution or cycle of the circular motion is called
Ans: Time Period
58. If a body rotates about a line (axis) passing through it then the motion is called-
Ans: Rotatory motion or Rotational motion
59. The motion in which a body moves to and fro or back and forth repeatedly about a fixed point, is called -
Ans: Oscillatroy Motion
