Question

solve this........


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Answer 1

Answer:

speed is defined as distance moved per unit time .

speed=distance/time

si unit:m/s

velocity is defined as displacment of body from its initial position with respect to time..

velocity=displacment/time

si unit:m/s

speed is always positive or zero

but velocity can be positive negative or zero

acceleration mns velocity of object over particular time

acceleration=velocity/time

si unit:m/s^2

if object doesn't change its acceleration for a period of time I.E. continues with same magnitude of acceleration it is defined as uniform acceleration and vice versa