CLASS 9TH UT 2
Total points
5/10
The respondent's email ([email protected]) was recorded on submission of this form.
WHAT IS YOUR NAME, CLASS AND SECTION
Nikunj sharma class 9Th N3
1. The rate of change of momentum of an object is proportional to
1/1
(a) Mass of the body
(b) Velocity of the body
(c) Net force applied on the body
(d) None of these
2. A force of 50N moves a body,
1/1
(a) Friction force exerted on the body is less than 50N
(b) Friction force exerted on the body is more than 50N
(c) None of these
(d) Both of a and b
3. When we pedaling the bicycle it stopes because
1/1
(a) The earth’s gravitational force acts on it
(b) It is not accelerated
(c) No balanced force acts on it
(d) Frictional force acts on it
4. A football and a stone has same mass then
1/1
(a) Both have same inertia
(b) Both have same momentum
(c) Both have different inertia
(d) Both have different momentum
5. A passenger in a moving train tosses a coin which falls behind him. It means that motion of the train is :
1/1
(a) Moves backward
(b) Move forward
(c) Be unaffected
(d) Rise upward
6. Which of the these is not a unit of force?
0/1
(a) Kilogram force
(b) Newton
(c) Gram force
(d) none of the above
Correct answer
(d) none of the above
7. When a balloon held between the hand is pressed , its shape changes. This happens because:
0/1
(a) Balanced force act on the balloon
(b) Unbalanced force act on the balloon
(c) Frictional forces act on the balloon
(d) Gravitational force acts on the balloon
Correct answer
(a) Balanced force act on the balloon
8. The speed of a car weighting 1500kg increases from 36km/h to 72km/h uniformly. What will be the change in the momentum of the car?
0/1
(a) 15000kg km/h
(b) 15000kgm/s
(c) 54000kg m/s
(d) 54000g m/s
Correct answer
(b) 15000kgm/s
9. An object of mass 2kg is sliding with a constant velocity of 4m/s on a frictionless horizontal table. The force required to keep the object moving with the same velocity is:
0/1
(a) 32N
(b) 0N
(c) 2N
(d) 8N
Correct answer
(b) 0N
10. A Passenger in a moving train tosses a coin which falls behind him. Its means that the motion of the train is :
0/1
(a) Accelerated
(b) Uniform
(C) both a and b
(d) none of the above
Correct answer
(a) Accelerated
Answers
Answer:
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. ... Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA)
Answer:
The respondent's email ([email protected]) was recorded on submission of this form.
WHAT IS YOUR NAME, CLASS AND SECTION
Nikunj sharma class 9Th N3
1. The rate of change of momentum of an object is proportional to
1/1
(a) Mass of the body
(b) Velocity of the body
(c) Net force applied on the body
(d) None of these
2. A force of 50N moves a body,
1/1
(a) Friction force exerted on the body is less than 50N
(b) Friction force exerted on the body is more than 50N
(c) None of these
(d) Both of a and b
3. When we pedaling the bicycle it stopes because
1/1
(a) The earth’s gravitational force acts on it
(b) It is not accelerated
(c) No balanced force acts on it
(d) Frictional force acts on it
4. A football and a stone has same mass then
1/1
(a) Both have same inertia
(b) Both have same momentum
(c) Both have different inertia
(d) Both have different momentum
5. A passenger in a moving train tosses a coin which falls behind him. It means that motion of the train is :
1/1
(a) Moves backward
(b) Move forward
(c) Be unaffected
(d) Rise upward
6. Which of the these is not a unit of force?
0/1
(a) Kilogram force
(b) Newton
(c) Gram force
(d) none of the above
Correct answer
(d) none of the above
7. When a balloon held between the hand is pressed , its shape changes. This happens because:
0/1
(a) Balanced force act on the balloon
(b) Unbalanced force act on the balloon
(c) Frictional forces act on the balloon
(d) Gravitational force acts on the balloon
Correct answer
(a) Balanced force act on the balloon
8. The speed of a car weighting 1500kg increases from 36km/h to 72km/h uniformly. What will be the change in the momentum of the car?
0/1
(a) 15000kg km/h
(b) 15000kgm/s
(c) 54000kg m/s
(d) 54000g m/s
Correct answer
(b) 15000kgm/s
9. An object of mass 2kg is sliding with a constant velocity of 4m/s on a frictionless horizontal table. The force required to keep the object moving with the same velocity is:
0/1
(a) 32N
(b) 0N
(c) 2N
(d) 8N
Correct answer
(b) 0N
10. A Passenger in a moving train tosses a coin which falls behind him. Its means that the motion of the train is :
0/1
(a) Accelerated
(b) Uniform
(C) both a and b
(d) none of the above
Correct answer
(a) Accelerated
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