Title : Laws of Motion -5 1st PUC PHYSICS
1. Which of the following statements is most correct?
(a) It is possible for an object to have motion in the absence of forces on the object.
(b) It is possible to have several forces acting on an object in the absence of motion of the object.
(c) Neither (a) nor (b) is correct
. (d) Both (a) and (b) are correct.
File Language : Kannada/English
State : Karnataka
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2. An object experiences no acceleration. Which of
the following cannot be true for the object?
(a) A single force acts on the object.
(b) No forces act on the object.
(c) Forces act on the object, but the forces cancel.
(d) None of these
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3. Which one of the following options is correct
according to Aristotle's Fallacy?
(a) An external force is necessary to keep a body
in uniform motion.
(b) The state of rest and the state of motion with constant velocity are equivalent in the absence of external forces.
(c) A force is not necessary to counter the opposing force of friction.
(d) To keep a body in uniform motion, no external
force is needed.
4. The term inertia was first used by
(a) Newton
(b) Galileo
(c) Aristotle
(d) Kepler
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5. Inertia is that property of a body by virtue of which the body is
(a) unable to change by itself the
state of rest.
(b) unable to change by itself the state of uniform motion.
(c) unable to change by itself the direction of
motion.
(d) unable to change by itself the state of rest or of uniform motion.
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6. A passenger getting down from a moving bus, falls in the direction of the motion of the bus. This is an example for
(a) second law of motion
(b) third law of motion
(c) inertia of rest
(d) inertia of motion
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7. When a speeding bus stops suddenly, passengers are thrown forward from their seats because
(a) the back of seat suddenly pushes the passengers forward.
(b) inertia of rest stops the bus and takes the body forward.
(c) upper part of the body continues to be in the state of motion whereas the lower part of the body in contact with seat remains at rest.
(d) upper part of the body come to rest whereas
the lower part of the body in contact with seat
begins to move.
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8. Physical independence of force is a consequence of
(a) first law of motion
(b) second law of motion
(c) third law of motion
(d) all of these laws
Answers: 1-d, 2-a, 3-a, 4-b, 5-d, 6-d, 7-c, 8-a
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