SELECT * FROM question_mgmt as q WHERE id=4103 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=8 AND subId=16 AND chapterId=187 and ex_no='3' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 9th science Motion when will you say a body is in i uniform acce

Question:

When will you say a body is in

(i) uniform acceleration? (ii) non-uniform acceleration?

Answer:

(i) Uniform acceleration : A body is said to be in uniform acceleration when its velocity is changing at the same rate i.e when its acceleration in unit time is the same. 

example : An object in freefall is in uniform acceleration.

(ii) Non-uniform acceleration : When a body moves with unequal velocity in the equal interval of time, the body is said to be moving with non-uniform acceleration.

example : If a car covers 10 meters in the first two seconds and 15 meters in the next two seconds.


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