An object moves along a straight line with an acceleration of $2\ m/s^2$. If its initial speed is $10\ m/s$, what will be its speed $2\ s$ later?

Academic Physics NCERT Class 9

Here, acceleration $a=2\ m/s^2$

Initial velocity $u=10\ m/s$

Time $t=2\ s$

Final velocity $v=?$

On using the first equation of the motion $v=u+at$

Or $v=10+2\times2$

Or $v=10+4$

Or $v=14\ m/s$

Thus, the velocity of the object after $2\ s$ will be $14\ m/s$.

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Updated on: 10-Oct-2022

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