Question

define acceleration and give its SI unit when is acceleration of a body negative give two example of situation in which acceleration of the body is negative​

Answer 1

Answer:

In uniform motion the velocity remains constant with time. thus the change in velocity for any time interval is zero.But in non uniform motion velocity changes with time .

In non uniform motion a new physical quantity called acceleration is used .The rate of change of velocity of moving body with is called acceleration .

Its SI unit is meter per second .

It can be negative positive or zero.

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