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2.Motion in Straight Line
easy
Draw graphs $a \to t$, $v\to t$ and $x\to t$ for the object falling freely.
Option A
Option B
Option C
Option D
Solution
For object falling freely, acceleration is constant and equal to negative $g$. Thus, graph $(a)$ shows the change in acceleration with respect to time $(a \rightarrow t)$.
Velocity of object falling freely, $v=-g t$. Thus, graph $(b)$ is obtained for $v \rightarrow t$.
Velocity of object falling freely, $\nu=-g t$. Thus, graph$ (b)$ is obtained for $v \rightarrow t$.For object falling freely, $h=\frac{1}{2} g t^{2}$. Thus, graph $(c)$ is obtained for $x \rightarrow t$.
Standard 11
Physics
