61. A racing car accelerates on a straight line from rest to a speed of 50 m/s in 25 s. Assuming uniform acceleration of the throughout, the distance covered in this will be
62. The motion of an object in a specified direction is called.
63. Which activity is not based upon kinetic friction
64. Assertion (A) Newton's Third Law of Motion is applicable only when bodies are in motion.
Reason (R) Newton's Third Law applies to all types of forces, e.g. gravitational, electric or magnetic forces etc.
Reason (R) Newton's Third Law applies to all types of forces, e.g. gravitational, electric or magnetic forces etc.
65. The product of mass and acceleration is called.
66. If an object moves with constant velocity, then which one of the following statement is not correct?
67. Shot from a rifle. What will be the kinetic energy of the rifle if the rifle comes backwards without stopping?
68. Two bodies A and B are moving with equal velocities. The mass of B is doubled that of A. In this context, which one of the following statement is correct?
69. Retardation means an object operates from . . . . . . . .
70. Match the columns.
Column I
Column II
a. Impulse
1. walking on ground
b. Newton's Third Law of Motion
2. Bogies of trains are provided with buffers
c. Inertia of direction
3. An athlete runs some distance before a taking jump
d. Inertia of Motion
4. Mud flying tangentially to the tyre of car
| Column I | Column II |
| a. Impulse | 1. walking on ground |
| b. Newton's Third Law of Motion | 2. Bogies of trains are provided with buffers |
| c. Inertia of direction | 3. An athlete runs some distance before a taking jump |
| d. Inertia of Motion | 4. Mud flying tangentially to the tyre of car |
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