When will you say a body is in (i) uniform acceleration? (ii) non-uniform acceleration?

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Solution

(i) A body is said to have uniform acceleration if it travels in a straight path in such a way that its velocity changes at a uniform rate, i.e., the velocity of a body increases or decreases by equal amounts in an equal interval of time.

(ii) A body is said to have non-uniform acceleration if it travels in a straight path in such a way that its velocity changes at a non-uniform rate, i.e., the velocity of a body increases or decreases in unequal amounts in an equal interval of time.

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\begin{matrix} Column-I & Column-II a. Its velocity at the end of t sec., 2t sec., 3t sec. etc are in the ratio & p. 1 : 2 : 3 b. Distances covered in 1^{s t} t sec., & q. 1 : 1 : 1 2^{n d} t sec ., 3^{r d} t. sec. are in the ratio c. Distances covered in t sec., 2t sec & & r. 1 : 3 : 5 3t sec. are in the ratio d. Change in velocity at the end of & s. 1 : 4 : 9 1^{s t} t.sec ., 2^{n d} t.sec ., 3^{r d} t.sec are in the ratio \end{matrix}

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