Question

A car accelerates from 200 m/s to 100 m/s in 5 seconds . What is its acceleration ?

Answer 1

$\huge {\pink {\underline {\underline {\bf{Answer:}}}}}$

initial velocity (u) = 200 m/s

final velocity (v) = 100 m/s

time (t) = 5 sec

acceleration (a) = ?

v = u+at ............ (equation of motion)

$\implies a = \frac {v-u}{t}$

$\implies a = \frac {200-100}{5}$

$\implies a = \frac {100}{5} = 20$

${\bf{\blue{\underline{so ,\: acceleration \:of\: the \:car = 20 m/s^2}}}}$

${\boxed {\underline {\sf{☆Some\: Important \:Equations☆}}}}$

$\bf v = u + at$

${\bf {s = ut + \frac {1}{2}at^2}}$

${\bf {v^2 = u^2 + 2as}}$