In an SHM, can velocity and displacement be in the same direction?

Explain: Can a displacement reaction be a redox reaction?

Define the terms angular velocity and angular displacement and find their respective relation with linear velocity and linear acceleration.

Can displacement of a body be zero?

Are particle velocity and wave velocity the same?

Write two different vectors having same direction.

What is the apparent change in frequency when source and observer move with same velocity in the same direction?

When can the magnitude of displacement be equal to the distance covered by a body?

An express train is moving with a velocity v_1 . Its driver finds another train is movig on the same track in the same direction with velocity v_2 . To escape collision, driver applies a retardation a on the train. The minimum time of escaping collision be

Can you notice Doppler effect, if both the observer(or listener) and the source of sound are moving with same velocity in the same direction.

Can the velocity of an object be in a direction other than the direction of acceleration?