Answer: a = - 0.8 m/s2 distance =x = 60m
Explanation: vo=10m/s , vf=2m/s , t=10s
a= (vf-vo)/t = (2-10) /10= - 0.8 m/s2 (sign means reduce your seed)
the second question is not clear . i do believe that you need the distance sandra moved (units .. meters ... not meters/second)
x=xo + vot+ at*t/2 = 0+10*10-0.8*10*10/2 = 60m
best wishes form colombia
