(A) The speed of a particle increases if the velocity and acceleration are in the same direction. If the velocity is positive,a positive acceleration

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(A) The speed of a particle increases if the velocity and acceleration are in the same direction. If the velocity is positive,a positive acceleration $(a > 0)$ increases the speed. Thus,$(1)$ matches with $(b)$.The speed of a particle decreases if the velocity and acceleration are in opposite directions. If the velocity is positive,a negative acceleration $(a Therefore,the correct matching is $1-b$ and $2-a$.

Class 11 Physics Motion in Straight Line Acceleration and its graph

Medium

Match the items in Column-$I$ with the items in Column-$II$ correctly.

Column-$I$ Column-$II$

$(1)$ Acceleration is positive $(a)$ Speed of the particle decreases

$(2)$ Acceleration is negative $(b)$ Speed of the particle increases

$(c)$ Speed of the particle keeps changing

Column-$I$	Column-$II$
$(1)$ Acceleration is positive	$(a)$ Speed of the particle decreases
$(2)$ Acceleration is negative	$(b)$ Speed of the particle increases
	$(c)$ Speed of the particle keeps changing

A
$1-b, 2-a$
B
$1-a, 2-b$
C
$1-c, 2-a$
D
$1-b, 2-c$

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Class 11 Questions

Class 11

Physics Questions

Chapter

Motion in Straight Line

Subtopic

Acceleration and its graph

Match the following columns.
Column $I$ Column $II$
$(A)$ $\frac{dv}{dt}$ $(p)$ Acceleration
$(B)$ $\frac{d|v|}{dt}$ $(q)$ Magnitude of acceleration
$(C)$ $\frac{dr}{dt}$ $(r)$ Velocity
$(D)$ $\left|\frac{dr}{dt}\right|$ $(s)$ Magnitude of velocity

Easy

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Draw the $x-t$ graphs for positive,negative,and zero acceleration.

Medium

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The relation between the displacement $x$ (in metre) and the time $t$ (in second) of a particle is $t = 2x^2 + 3x$. If the displacement of the particle is $25 \ cm$ from the origin $(x = 0)$, then the acceleration of the particle is:

MediumTS EAMCET 2025

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The position $x$ of a particle varies with time as $x = at^2 - bt^3$,where $a$ and $b$ are constants. The acceleration of the particle will be zero at:

EasyMHT CET 2023

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$Assertion$ : Retardation is directly opposite to the velocity.
$Reason$ : Retardation is equal to the time rate of decrease of speed.

EasyAIIMS 2002

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Column $I$	Column $II$
$(A)$ $\frac{dv}{dt}$	$(p)$ Acceleration
$(B)$ $\frac{d\|v\|}{dt}$	$(q)$ Magnitude of acceleration
$(C)$ $\frac{dr}{dt}$	$(r)$ Velocity
$(D)$ $\left\|\frac{dr}{dt}\right\|$	$(s)$ Magnitude of velocity

Match the items in Column-$I$ with the items in Column-$II$ correctly. Column-$I$ Column-$II$ $(1)$ Acceleration is positive $(a)$ Speed of the particle decreases $(2)$ Acceleration is negative $(b)$ Speed of the particle increases $(c)$ Speed of the particle keeps changing

Similar Questions

Match the following columns.Column $I$Column $II$$(A)$ $\frac{dv}{dt}$$(p)$ Acceleration$(B)$ $\frac{d|v|}{dt}$$(q)$ Magnitude of acceleration$(C)$ $\frac{dr}{dt}$$(r)$ Velocity$(D)$ $\left|\frac{dr}{dt}\right|$$(s)$ Magnitude of velocity

Draw the $x-t$ graphs for positive,negative,and zero acceleration.

The relation between the displacement $x$ (in metre) and the time $t$ (in second) of a particle is $t = 2x^2 + 3x$. If the displacement of the particle is $25 \ cm$ from the origin $(x = 0)$, then the acceleration of the particle is:

The position $x$ of a particle varies with time as $x = at^2 - bt^3$,where $a$ and $b$ are constants. The acceleration of the particle will be zero at:

$Assertion$ : Retardation is directly opposite to the velocity. $Reason$ : Retardation is equal to the time rate of decrease of speed.

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Match the items in Column-$I$ with the items in Column-$II$ correctly.

Column-$I$ Column-$II$

$(1)$ Acceleration is positive $(a)$ Speed of the particle decreases

$(2)$ Acceleration is negative $(b)$ Speed of the particle increases

$(c)$ Speed of the particle keeps changing

Match the following columns.
Column $I$ Column $II$
$(A)$ $\frac{dv}{dt}$ $(p)$ Acceleration
$(B)$ $\frac{d|v|}{dt}$ $(q)$ Magnitude of acceleration
$(C)$ $\frac{dr}{dt}$ $(r)$ Velocity
$(D)$ $\left|\frac{dr}{dt}\right|$ $(s)$ Magnitude of velocity

$Assertion$ : Retardation is directly opposite to the velocity.
$Reason$ : Retardation is equal to the time rate of decrease of speed.