A body starts with initial velocity $u = 20\, ext{m s}^{-1}$ and move…

Question

A body starts with initial velocity $u = 20\,	ext{m s}^{-1}$ and moves with constant acceleration $a = 4\,	ext{m s}^{-2}$ for $8\,	ext{s}$. What distance does it cover?

Accepted Answer

D. $288\,	ext{m}$

Use $s = ut + 	frac{1}{2}at^2$. Substituting, $s = 20	imes 8 + 	frac{1}{2}	imes 4	imes 8^2 = 160 + 128 = 288\,	ext{m}$. Therefore, option D is correct.

Answer

$128\,	ext{m}$

Answer

$160\,	ext{m}$

Answer

$208\,	ext{m}$

A body starts with initial velocity $u = 20\,\text{m s}^{-1}$ and moves with constant acceleration $a = 4\,\text{m s}^{-2}$ for $8\,\text{s}$. What distance does it cover?