Question 1
Question: Inertia is ________
| 1. | a property of matter |
| 2. | a type of force |
| 3. | the speed of an object |
| 4. | none of the above |
Answer: 1
Question 2
Question: A and B are two objects with masses 100 kg and 75 kg respectively, then ________ .
| 1. | both will have the same inertia |
| 2. | B will have more inertia |
| 3. | A will have more inertia |
| 4. | both will have less inertia |
Answer: 3
Question 3
Question: The resultant of balanced forces is ________
| 1. | non zero |
| 2. | equal to zero |
| 3. | not equal to zero |
| 4. | equal to the acceleration produced in the body |
Answer: 2
Question 4
Question: The physical quantity, which is the measure of inertia, is ________
| 1. | density |
| 2. | weight |
| 3. | force |
| 4. | mass |
Answer: 4
Question 5
Question: The sparks produced during sharpening of a knife against a grinding wheel leaves the rim of the wheel tangentially. This is due to ________
| 1. | inertia of rest |
| 2. | inertia of motion |
| 3. | inertia of direction |
| 4. | force applied |
Answer: 3
Question 6
Question: The law that gives a qualitative definition of force is ________
| 1. | Newton's second law of motion |
| 2. | Law of inertia |
| 3. | Newton's third law of motion |
| 4. | Law of gravitation |
Answer: 2
Question 7
Question: Name the property of matter due to which a body continues in its state of rest or uniform motion unless an external force acts on it.
| 1. | Inertia |
| 2. | Elasticity |
| 3. | Viscosity |
| 4. | Density |
Answer: 1
Question 8
Question: The S.I. unit of force is
| 1. | erg |
| 2. | joule |
| 3. | newton |
| 4. | dyne |
Answer: 3
Question 9
Question: When a force of 1N acts on a mass of 1kg that is free to move, the object moves with
| 1. | a speed of 1 m/s |
| 2. | a speed of 1 km/s |
| 3. | an acceleration 10 m/s2 |
| 4. | an acceleration of 1 m/s2 |
Answer: 4
Question 10
Question: The acceleration in a body is due to
| 1. | balanced force |
| 2. | unbalanced force |
| 3. | mass |
| 4. | electrostatic force |
Answer: 2
Question 11
Question: When an object undergoes acceleration
| 1. | its speed always increases |
| 2. | its velocity always increases |
| 3. | it always falls towards the Earth |
| 4. | a force always acts on it |
Answer: 4
Question 12
Question: A force of 10 N is acting on an object of mass 10 kg. What is the acceleration produced in it?
| 1. |  |
| 2. |  |
| 3. | 100 m/s2 |
| 4. | 100 m/s |
Answer: 1
Question 13
Question: What is the force acting on an object of mass 10 kg moving with a uniform velocity of 10 m/s ?
| 1. | 100 N |
| 2. | 10 N |
| 3. | 0 |
| 4. | 1 N |
Answer: 3
Question 14
Question: An athlete can take a longer jump if he comes running from a distance as compared to that when he jumps suddenly. Identify the type of inertia.
| 1. | Inertia of rest |
| 2. | Inertia of motion |
| 3. | Inertia of direction |
| 4. | Inertia of position |
Answer: 2
Question 15
Question: 1 newton = ________
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
Answer: 2
Question 16
Question: The physical quantity, which is equal to change in momentum, is
| 1. | force |
| 2. | impulse |
| 3. | acceleration |
| 4. | velocity |
Answer: 2
Question 17
Question: The physical quantity, which is equal to rate of change of momentum, is
| 1. | displacement |
| 2. | acceleration |
| 3. | force |
| 4. | impulse |
Answer: 3
Question 18
Question: 1kg m/s = _________.
| 1. | 1 N s |
| 2. | 1 N |
| 3. | 1 N m |
| 4. | 10 N s |
Answer: 1
Question 19
Question: An example for a vector quantity is __________
| 1. | speed |
| 2. | momentum |
| 3. | distance |
| 4. | length |
Answer: 2
Question 20
Question: Impulse = _________.
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
Answer: 2
Question 21
Question: SI unit of impulse is ___________.
| 1. | N s N s |
| 2. | N s2 |
| 3. |  |
| 4. |  |
Answer: 1
Question 22
Question: The momentum of a toy bus of 0.01 kg moving with a velocity of 5 m/s is
| 1. | 0.005 kg m/s |
| 2. | 0.05 kg m/s |
| 3. | 0.005 N s |
| 4. | 0.5 kg m/s |
Answer: 2
Question 23
Question: The product of mass and velocity is known as ____________ .
| 1. | acceleration |
| 2. | force |
| 3. | momentum |
| 4. | velocity |
Answer: 3
Question 24
Question: What is the momentum of a man of mass 100 kg when he walks with a uniform velocity of 2 m/s?
| 1. |  |
| 2. | 200 N |
| 3. |  |
| 4. |  |
Answer: 1
Question 25
Question: The two factors on which the momentum of a body depends are ______ and _________ .
| 1. | velocity, time |
| 2. | mass, weight |
| 3. | mass, distance |
| 4. | mass,velocity |
Answer: 4
Question 26
Question: The gravitational force of earth acting on a body of mass 1 kg is _______.
| 1. | 8.9 N |
| 2. | 9.8 N |
| 3. | 980 N |
| 4. | 1 N |
Answer: 2
Question 27
Question: Momentum of a massive object at rest is _______.
| 1. | very large |
| 2. | very small |
| 3. | zero |
| 4. | none of the above |
Answer: 3
Question 28
Question: The resultant of action and reaction forces is _______.
| 1. | greater than zero |
| 2. | less than zero |
| 3. | zero |
| 4. | none of the above |
Answer: 1
