Distance covered by a particle never becomes zero but displacement becomes zero.

Growth rate becomes zero in

Assertion: Displacement of a body may be zero when distance travelled by it is not zero. Reason: The displacement is the shortest distance between initial and final position.

When does the average velocity become zero?

The velocity of a particle is zero at t=0

If the total mechanical energy of a particle is zero is its linear momentum necessarily zero? Is it necessarily nonzero?

Give examples where a. the velocity of a particle is zero but its acceleration is not zero. b.the velocity is opposite in direction to the acceleration, c. the velocity is perpendicular to the acceleration.

In expiration, diaphragm becomes

When the eccentricity of a ellipse becomes zero , then it becomes a

When do the distance and magnitude of displacement become equal?

A sine wave is travelling in a medium. A particular partile has zero displacement at a certain instant. The particle closest to it having zero displacement is at a distance