Q161
Open questionA 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
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Physics GK · all questionsLaw of Motion
Law of Motion
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Q162
Open questionThe motion of an object in a specified direction is called.
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Q163
Open questionWhich activity is not based upon kinetic friction
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Q164
Open questionAssertion (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.
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Q165
Open questionThe product of mass and acceleration is called.
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Q166
Open questionIf an object moves with constant velocity, then which one of the following statement is not correct?
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Q167
Open questionShot from a rifle. What will be the kinetic energy of the rifle if the rifle comes backwards without stopping?
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Q168
Open questionTwo 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?
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Q169
Open questionRetardation means an object operates from . . . . . . . .
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Q170
Open questionMatch 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 |
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Q171
Open questionAssertion (A) A body having non-zero acceleration can have a constant velocity.
Reason (R) Acceleration is the rate of change of velocity.
Reason (R) Acceleration is the rate of change of velocity.
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Q172
Open questionA wheel-barrow is an example of
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Q173
Open questionApplying a force of 5 newtons on a wooden plank with mass m1 kg, it accelerates with an acceleration of 10 ms-2. Another plank of mass m2 kg accelerates with an acceleration of 20 ms-2 when the same force is applied. If both the planks are tied with each other and the same force is applied on them, what will be the acceleration?
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Q174
Open questionA car starts from Bengaluru, goes 50 km in a straight line towards South, immediately turns around and returns to Bengaluru. The time taken for this round trip is 2h. The magnitude of the average velocity of the car for this round trip
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Q175
Open questionA ball balanced on a vertical rod is an example of
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Q176
Open questionAccording to the Second Law of Motion, for a given force, acceleration is inversely proportional to the . . . . . . . . of an object.
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Q177
Open questionA brass ball is tied to a thin wire and swung so as to move uniformly in a horizontal circle. Which of the following statements in this regard is/are true?
1. The ball moves with constant velocity.
2. The ball moves with constant speed.
3. The ball moves with constant acceleration.
4. The magnitude of the acceleration of the ball is constant.
Select the correct answer:
1. The ball moves with constant velocity.
2. The ball moves with constant speed.
3. The ball moves with constant acceleration.
4. The magnitude of the acceleration of the ball is constant.
Select the correct answer:
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Q178
Open questionIn a vacuum, a five-rupee coin a, feather of sparrow bird and a mango are dropped simultaneously from the same height. The time taken by them to reach the bottom is t1, t2 and t3, respectively. In this situation, we will observe that
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Q179
Open questionForce/mass = . . . . . . . .
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Q180
Open questionA man weighing 70 kg is coming down in lift. It the cable of the lift breaks sudden, the weight of the man would become
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