Assertion : A body can have acceleration even if its velocity is zero at a given instant of time. Re

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2.Motion in Straight Line

easy

$Assertion$ : A body can have acceleration even if its velocity is zero at a given instant of time.

$Reason$ : A body is numerically at rest when it reverses its direction.

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

If the Assertion is correct but Reason is incorrect.

If both the Assertion and Reason are incorrect.

(AIIMS-1998)

Solution

When a body is thrown upwards vertically, at the highest point its velocity becomes zero but gravitational force continues to act on it so it has acceleration in downward direction even at the highest point. So assertion is true. A body is numerically at rest but it reverses its direction due to acceleration present in it. Reason is true & it supports assertion.

Standard 11

Physics

The displacement $x$ of a particle in a straight line motion is given by $x=1-t-t^2$. The correct representation of the motion is $…………..$.

hard

The relation between time ' $t$ ' and distance ' $x$ ' is $t=$ $\alpha x^2+\beta x$, where $\alpha$ and $\beta$ are constants. The relation between acceleration $(a)$ and velocity $(v)$ is:

hard

(JEE MAIN-2024)

A particle is moving in one dimension (along $\mathrm{x}$ axis) under the action of a variable force. It's initial position was $16 \mathrm{~m}$ right of origin. The variation of its position ( $\mathrm{x}$ ) with time ( $\mathrm{t})$ is given as $\mathrm{x}=-3 \mathrm{t}^5+18 \mathrm{t}^2+16 \mathrm{t}$, where $\mathrm{x}$ is in $\mathrm{m}$ and $\mathrm{t}$ is in $\mathrm{s}$. The velocity of the particle when its acceleration becomes zero is________ $\mathrm{m} / \mathrm{s}.$

hard

(JEE MAIN-2024)

The acceleration time graph of a particle moving along a straight line is shown. At what time particle acquires its initial velocity……..$s$

medium

Given below are two statements:
Statement $I:$ Area under velocity- time graph gives the distance travelled by the body in a given time.
Statement $II:$ Area under acceleration- time graph is equal to the change in velocity- in the given time.
In the light of given statements, choose the correct answer from the options given below.

medium

(JEE MAIN-2023)

$Assertion$ : A body can have acceleration even if its velocity is zero at a given instant of time. $Reason$ : A body is numerically at rest when it reverses its direction.

Solution

Similar Questions

The displacement $x$ of a particle in a straight line motion is given by $x=1-t-t^2$. The correct representation of the motion is $…………..$.

The relation between time ' $t$ ' and distance ' $x$ ' is $t=$ $\alpha x^2+\beta x$, where $\alpha$ and $\beta$ are constants. The relation between acceleration $(a)$ and velocity $(v)$ is:

The acceleration time graph of a particle moving along a straight line is shown. At what time particle acquires its initial velocity……..$s$

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$Assertion$ : A body can have acceleration even if its velocity is zero at a given instant of time.

$Reason$ : A body is numerically at rest when it reverses its direction.