Physics-
General
Easy
Question
Which of the following graphs cannot possibly represent one dimensional motion of a particle

- I and II
- II and III
- II and IV
- All four
The correct answer is: All four
I is not possible because total distance covered by a particle increases with time
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
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If 
If 
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A ball is thrown vertically upwards. Which of the following graph/graphs represent velocity-time graph of the ball during its flight (air resistance is neglected)?

In the positive region the velocity decreases linearly (during rise) and in the negative region velocity increases linearly (during fall) and the direction is opposite to each other during rise and fall, hence fall is shown in the negative region
A ball is thrown vertically upwards. Which of the following graph/graphs represent velocity-time graph of the ball during its flight (air resistance is neglected)?

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As,
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or
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A cyclist starts from the centre
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then solutions of
are in -
If
then solutions of
are in -
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, care in H.P., then
, Sin2
, Sin2
are in
In
, care in H.P., then
, Sin2
, Sin2
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is
Solution of
is
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If
then the general solution of 
If
then the general solution of 
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The graph between the displacement
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and
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, 
Region
shows that graph bending toward time axis
acceleration is negative.
Region
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velocity is zero. Hence acceleration is zero.
Region
shows that graph is bending towards displacement axis
acceleration is positive.
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shows that graph having constant slope
velocity is constant. Hence acceleration is zero
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Region
Region
The graph between the displacement
and
for a particle moving in a straight line is shown in figure. During the interval
and
the acceleration of the particle is

, 
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Region
shows that graph bending toward time axis
acceleration is negative.
Region
shows that graph is parallel to time axis
velocity is zero. Hence acceleration is zero.
Region
shows that graph is bending towards displacement axis
acceleration is positive.
Region
shows that graph having constant slope
velocity is constant. Hence acceleration is zero
Region
Region
Region
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then the general solution of
=
then the general solution of
=
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Velocity-time
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Between time interval
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to 

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graph for a moving object is shown in the figure. Total displacement of the object during the same interval when there is non-zero acceleration and retardation is

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In

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AsinBsin
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In

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Given 
(
AsinBsin
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then the general solution of
=
then the general solution of
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is
Solution of
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