Kinematics Question 77
Question: Assertion : A body can have acceleration even if it’s velocity is zero at a given instant of time. Reason : A body is momentarily at rest when it reverses it’s direction of motion.
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: A
Solution:
When body going vertically upwards, reaches at the highest point, then it’s momentarily at rest and it then reverses it’s direction. At the highest point of motion, it’s velocity is zero but it’s acceleration is equal to acceleration due to gravity.
