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Motion in One Dimension — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsMotion in One Dimension1 Mark
Question
Assertion : The average and instantaneous velocities have same value in a uniform motion.
Reason : In uniform motion, the velocity of an object increases uniformly.
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Answer

(c) An object is said to be in uniform motion if itundergoesequaldisplacementinequalintervals of time.$\therefore v_{a v}=\frac{s_1+s_2+s_3+\ldots}{t_1+t_2+t_3+\ldots}=\frac{s+s+s\ldots}{t+t+t+\ldots}=\frac{n s}{n t}=\frac{s}{t}$and $v_{i n s}=\frac{s}{t}$.Thus, in uniform motion average and instantaneous velocities have same value andbodymoveswithconstantvelocity.

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