Question

A body moving with a uniform acceleration has a velocity of 12.0cm/s when its x coordinate is 3.00cm if it's coordinate 2.00s later is -5.00cm, what is the magnitude of it's acceleration.

Answer 1

Task #Q94392

$v=12m/s$

$x_1=3sm$

$x_2=-5sm$

$t=2s$

______________

$a-?$

______________

$S=x_1-x_2=3-(-5)=8$

$S=vt+(at^2)/2$

$8=12*2+(a*4)/2$

$a=-8m/s^2$