A car start from rest and acquire a velocity of $54\ km/h$ in $2\ sec$. Find the acceleration.


Here, the initial velocity $u=0$

Final velocity $v=54\ km/h=54\times\frac{5}{18}\ m/s=15\ m/s$

Time $t=2\ sec.$

Therefore, acceleration $a=\frac{v-u}{t}$

$=\frac{15-0}{2}$

$=7.5\ m/s^2$

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Updated on: 10-Oct-2022

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