Physics - Vectors Question with Solution | TestHub
Assertion (A): The velocity of a projectile at its highest point is perpendicular to its acceleration.
Reason (R): At the highest point, the vertical component of velocity is zero, and acceleration is purely vertical (due to gravity).
A) Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. B) Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion. C) Assertion is true but the Reason is false. D) Assertion is false but the Reason is true.
Options:
Answer:
Solution:
Assertion (A) is true. At the highest point of a projectile's trajectory, its velocity is purely horizontal, while the acceleration due to gravity is purely vertical.
Reason (R) is true. At the highest point, the vertical component of velocity becomes momentarily zero, and the acceleration acting on the projectile is solely the acceleration due to gravity, which acts vertically downwards.
Since the velocity is horizontal and acceleration is vertical, they are perpendicular to each other, thus Reason correctly explains Assertion.
