Question

Define Velocity and acceleration​

Answer 1

Answer:

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Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity. As velocity is an example of vector, it has direction and magnitude.

Velocity The amount of motion normalized to time is defined to be the velocity of the object. It is thus the displacement of the object divided by the time required to make the displacement. [The object in Tissue Tracking Echocardiography (TTE) is mainly a single point or a Region of Interest (ROI).] Hence, its unit is cm/s.

Answer 2

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The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. ... Velocity is a physical vector quantity; both magnitude and direction are needed to define it.

2nd answer

In mechanics, acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities. The orientation of an object's acceleration is given by the orientation of the net force acting on that object