Physics-Objective Related Question Answers
51. Actual length travelled by a body is called?
Distance
52. Shortest distance from the initial to the final position of a body is called?
Displacement.
53. The study of particles or bodies when they are at rest or in motion is dealt with?
Mechanics
54. Mechanics is divided into two, they are?
Statics & Dynamics
55. The study of objects of-rest is called?
Statics
56. The study of moving objects is called?
Dynamics
57. The product of mass and velocity of a body?
Momentum [P= mv [m=Mass; v=velocity]
58. Unit of Momentum is?
kg m/s
59. A Karate player in order to break a brick hits quickly because of?
Momentum
60. Issac Newton propounded his law of motion is his book?
Principia Mathematica
61. Propulsion of rocket is explained by which law of motion?
Newton’s Third law of motion
62. Swimming is explained by which law of motion?
Newton’s Third law of motion
63. Flying of Birds is explained by which law of motion?
Newton’s Third law of motion
64. A property of a body which is unable to change its state by itself in the absense of external force called?
Inertia
65. The Law of inertia was discovered by?
Galileo
66. Which are the three types of inertia?
Inertia of Rest; Inertia of Motion and Inertia of Direction
67. An athlete runs some distance before taking a long jump is example of?
Inertia of motion
68. As the train starts moving, a man sitting inside leans backward is an example of?
Inertia of rest
69. Rotating wheel of an automobile throw out mud tangentially outward is an example of?
Inertia of direction
70. If a rotating body spins on its axis, its motion is called?
Spin motion or rotation motion
71. When an object travels around another object it is known as?
Revolution
72. The motion of an object in a vertical plane under the influence of gravitational force is known as?
Projectile motion
73. Projectile path is known as?
Trajectory
74. A projectile reaches maximum range, when angle of projection is at?
450
75. The path of the projectile is always a?
Parabola
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