Question

Assertion : An object may have varying speed without having varying velocity.
Reason : If the velocity is zero at an instant, the acceleration may not be zero at that instant.
A. If both Assertion and Reason are correct and Reason is the correct explanation of assertion.
B. If both Assertion and Reason are correct but Reason in not the correct explanation of Assertion.
C. If Assertion is true but Reason is false.
D. If Assertion is false but Reason is true.

Answer 1

Correct Answer - D
If speed varies, then velocity will definitely vary. When a particle is thrown upwards, at highest point
`a ne 0` but `upsilon = 0`.