This document contains 29 multiple choice questions about Newton's laws of motion. The questions cover topics like unbalanced forces, action-reaction pairs, inertia, momentum, and more. Newton's three laws of motion state that an object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force, the acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, and that for every action, there is an equal and opposite reaction.
This pdf file contains grade 8 science learning materials provided to us by the Department of Education during our seminar on the Implementation of the K-12 program held at CNU
This pdf file contains grade 8 science learning materials provided to us by the Department of Education during our seminar on the Implementation of the K-12 program held at CNU
In the realm of physics, the study of motion and the forces that cause it forms the foundation for understanding the physical world. Class 9 Science introduces students to the fundamental concepts of force and the laws of motion, a crucial chapter that lays the groundwork for more advanced studies in physics. Let's delve into these concepts to gain a comprehensive understanding.
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http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
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Ethnobotany and Ethnopharmacology:
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2. Question 1.
Which of the following statements is not correct
for an object moving along a straight path in an
accelerated motion?
(a) Its speed keeps changing
(b) Its velocity always changes
(c) It always goes away from the Earth
(d) A force is always acting on it
3. Question 2.
According to the third law of motion, action and
reaction
(a) Always act on the same body
(b) Always act on different bodies in opposite
directions
(c) Have same magnitude and directions
(d) Act on either body at normal to each other
4. Question 3
The inertia of an object tends to cause the object
(a) To increase its speed
(b) To decrease its speed
(c) To resist any change in its state of motion
(d) To decelerate due to friction
5. Question 4
A passenger in a moving train tosses a coin
which falls behind him. It means that motion of
the train is
(a) Accelerated
(b) Uniform
(c) Retarded
(d) Along circular tracks
6. Question 5
An object of mass 2 kg is sliding with a constant
velocity of 4 ms-1 on a frictionless horizontal
table. The force required to keep the object
moving with the same velocity is
(a) 32 N
(b) 0 N
(c) 2 N
(d) 8 N
7. Question 6.
Rocket works on the principle of conservation
of
(a) Mass
(b) Energy
(c) Momentum
(d) Velocity
8. Question 7.
A water tanker filled up to 23 of its height is
moving with a uniform speed. On a sudden
application of brakes, the water in the tank
would
(a) Move backward
(b) Move forward
(c) Be unaffected
(d) Rise upwards
9. Question 8.
If the mass of a body is doubled and its
velocity becomes half, then the linear
momentum of the body will
(a) Remain same
(b) Become double
(c) Become half
(d) Become four times
10. Question 9.
When a number of forces acting simultaneously on
a body bring about a change in its state of rest or of
uniform motion in a straight line, then these forces
acting on the body are said to be
(a) Balanced forces
(b) Equal forces
(c) Unbalanced forces
(d) Opposite forces
11. Question 10.
When a car at high speed makes a sharp turn,
the driver in a car tends to get thrown to the
side opposite to the turn. This is due to the
(a) Inertia of motion
(b) Inertia of time
(c) Inertia of rest
(d) Inertia of direction
12. Question 11.
A man is standing on a boat in still water. If he
walks towards the shore, then the boat will
(a) Move away from the shore
(b) Move towards the shore
(c) Remain stationary
(d) None of these
13. Question 12.
Which of the following is an incorrect statement?
(a) Mass is measure of inertia of a body.
(b) Newton’s first law of motion is the law of inertia.
(c) Unbalanced force produces constant velocity.
(d) Newton’s third law talks about the direction of the
force
14. Question 13.
A ball is thrown vertically upward in a train
moving with uniform velocity. The ball will
(a) Fall behind the thrower
(b) Fall ahead of the thrower
(c) Return to the thrower
(d) Fall on the left of the thrower
15. Question 14.
When we stop pedalling, the bicycle begins to slow
down. This is because of the
(a) Frictional force acting along the direction of motion of
bicycle
(b) Air resistance which is in the direction of motion
(c) Frictional force acting opposite to the direction of motion
of bicycle by the road
(d) Nature of the bicycle to stop after some time
16. Question 15.
Inertia is the property of a body by virtue of
which, it cannot change by itself
(a) Its state of rest
(b) Its steady state of uniform motion
(c) Its direction of motion
(d) All of these.
17. Question 16.
An athlete does not come to rest immediately
after crossing the winning line due to the
(a) Inertia of motion
(b) Inertia of rest
(c) Inertia of direction
(d) None of these
25. Question 24.
The inertia of a moving object depends
on:
i. Mass of the object
ii. Momentum of the object
iii. Speed of the object
iv. Shape of the object
27. Question 26.
The rate of change of momentum of an object is
proportional to
I. Mass of the body
II. Velocity of the body
III. Net force applied on the body
IV. None of these
28. Question 27.
Force can _______
1.Change the motion of the object.
2.Change the speed of the object.
3.Change the shape of the object.
4. All of the above.
29. Question 28.
The unit of measuring the momentum of
a moving body is:
(a) m/s
(b) kg.m/s
(c) kg.m/s2
(d) N m2/kg2
30. Question 29.
Example for newtons third law is
1. Person standing in moving bus.
2. Player catching a ball
3. Person swimming in pool
4. None of the above.