(B) When an object is moving,its velocity vector points in the direction of motion.If the speed of the object is decreasing,it means the object is und

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Velocity and acceleration are in opposite directions.

(B) When an object is moving,its velocity vector points in the direction of motion.If the speed of the object is decreasing,it means the object is undergoing retardation or deceleration.In physics,deceleration occurs when the acceleration vector acts in the direction opposite to the velocity vector.Therefore,for a moving object with decreasing speed,the direction of acceleration is opposite to the direction of velocity.

Class 11 Physics Motion in Straight Line Acceleration and its graph

Medium

If the speed of a moving object decreases,what are the directions of its velocity and acceleration?

A
Velocity and acceleration are in the same direction.
B
Velocity and acceleration are in opposite directions.
C
Acceleration is perpendicular to velocity.
D
Acceleration is zero.

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Class 11

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Motion in Straight Line

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Acceleration and its graph

The distance-time graph of a particle at time $t$ makes an angle of $45^{\circ}$ with the time axis. After one second,it makes an angle of $60^{\circ}$ with the time axis. What is the average acceleration of the particle?

Medium

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$A$ body in one-dimensional motion has zero speed at an instant. At that instant,it must have:

Easy

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If the displacement ($s$ in metre) of a moving particle in terms of time ($t$ in second) is $s = t^3 - 6t^2 + 18t + 9$,then the minimum velocity attained by the particle is (in $m \ s^{-1}$)

MediumAP EAMCET 2025

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$A$ body is moving according to the equation $x = at + bt^2 - ct^3$,where $x$ is displacement and $a, b,$ and $c$ are constants. The acceleration of the body is:

Easy

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The acceleration $(a)$ - time $(t)$ graph for a body starting from rest is given below. The maximum speed of the body is (in $m/s$)

MediumMHT CET 2025

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If the speed of a moving object decreases,what are the directions of its velocity and acceleration?

Similar Questions

The distance-time graph of a particle at time $t$ makes an angle of $45^{\circ}$ with the time axis. After one second,it makes an angle of $60^{\circ}$ with the time axis. What is the average acceleration of the particle?

$A$ body in one-dimensional motion has zero speed at an instant. At that instant,it must have:

If the displacement ($s$ in metre) of a moving particle in terms of time ($t$ in second) is $s = t^3 - 6t^2 + 18t + 9$,then the minimum velocity attained by the particle is (in $m \ s^{-1}$)

$A$ body is moving according to the equation $x = at + bt^2 - ct^3$,where $x$ is displacement and $a, b,$ and $c$ are constants. The acceleration of the body is:

The acceleration $(a)$ - time $(t)$ graph for a body starting from rest is given below. The maximum speed of the body is (in $m/s$)

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