Question

A car starts from rest and accelerates for 8 secs at a rate of 2m/sec square .Find the distance covered .Also find the avg velocity during the period
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Answer 1

Explanation:

I hope you understand my answer in brief

Answer 2

Answer:

The Distance (Distance and Displacement are same in this case as in every 9th grade question, the body travels in a straight line) traversed by the car is $64m$ and the velocity of the car is $16m/s$.

Explanation:

$u=0m/s$

$t=8sec$

$a=2m/{s}^2$

$s=?$

$v=?$

$2^nd Equation of Motion :$

$s=ut+\frac{1}{2}a{t}^2$

$s=(0*8)+(\frac{1}{2}*2*8*8)$

$s=2*8*4$

$s=64m$

$1^st Equation of Motion :$

$v=u+at$

$v=0+(2*8)$

$v=16m/s$