Home
Class 11
PHYSICS
Assertion : A body is momentarily at res...

Assertion : A body is momentarily at rest at the instant it reverses the direction.
Reason : A body cannot have acceleration if its velocity is zero at a given instant of time.

A

Both (A) and ( R) are ture and ( R) is the correct explanation of (A)

B

Both (A) and ( R) are true and ( R) is not the correct explanation of (A)

C

(A) is true but ( R) is false

D

Both (A) and ( R) are false

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

Can a body have acceleration without having velocity?

For a moving body at any instant of time

Assertion : A particle may be momentarily at rest and yet have non-zero acceleration. Reason : The zero velocity of a particle at any instant does not necessarily imply zero acceleration at that instant.

"A lift is ascending with decreasing speed". What are the directions of velocity and acceleration of the lift at the given instant.

"A lift is ascending with decreasing speed". What are the directions of velocity and acceleration of the lift at the given instant.

Assertion: If a body is momentarily at rest, it means that force or acceleration are necessarily zero at that instant. Reason: Force on a body at a given time is determined by the direction of motin only.

A : It is not possible to have constant velocity and variable acceleration. R : Accelerated body cannot have constant velocity.

When the velocity of a body executing shm is zero its acceleration is not zero. Why?

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.