Question

speed of a body at any particular instant is known as​

Answer 1

The speed of a body at any particular instant is known as​  instantaneous speed,

Explanation:

• The net distance covered divided by time taken is called speed of an object.
• The speed of a body at a particular instant is called instantaneous speed.
• The value of instantaneous speed is positive always.
• We direction is included with instantaneous speed, it is called instantaneous velocity.

Answer 2

Given that,

Speed of a body at any particular instant.

We know that,

The speed of a body at any particular instant is called acceleration.

Acceleration :

Acceleration of the object is equal to the rate of change of velocity of the object.

Velocity :

Velocity of the object is equal to the rate of change of position of the object.

Hence, This is the required answer.