(D) When a body reverses its direction, it comes to rest for a moment, for example, a body thrown upward at the topmost point. Hence, the reason state

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Assertion is false but Reason is true

(D) When a body reverses its direction, it comes to rest for a moment, for example, a body thrown upward at the topmost point. Hence, the reason statement is correct.In the same example, at the topmost point, the velocity of the particle is $0$, but the acceleration of the particle is equal to the acceleration due to gravity $(g = 9.8 \ m/s^2)$, which is non-zero.Therefore, the assertion statement is false.

Class 11 Physics Motion in Straight Line Motion Under Gravity

Medium

Assertion: The zero velocity of a particle at any instant always implies zero acceleration at that instant.
Reason: $A$ body is momentarily at rest when it reverses its direction of motion.
The correct option among the following is:

TS EAMCET 2022 All TS EAMCET

A
Assertion is true, Reason is true and Reason is the correct explanation for Assertion
B
Assertion is true, Reason is true but Reason is not the correct explanation for Assertion
C
Assertion is true but Reason is false
D
Assertion is false but Reason is true

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Assertion: The zero velocity of a particle at any instant always implies zero acceleration at that instant.Reason: $A$ body is momentarily at rest when it reverses its direction of motion.The correct option among the following is:

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$A$ ball dropped from the top of a tower falls the first half of the height of the tower in $10 \, s$. The total time spent by the ball in the air is ......... $s$. [Take $g = 10 \, m/s^2$]

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Assertion: The zero velocity of a particle at any instant always implies zero acceleration at that instant.
Reason: $A$ body is momentarily at rest when it reverses its direction of motion.
The correct option among the following is: