Sandra is riding a bicycle at 10.0 meters/seconds. she slows down to 2.0 meters/seconds in 10 seconds. her acceleration is. how many meeters / seconds ?

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

i think its

"i have always loved contemporary art and made it a general goal to work within the field. after a few nonprofit internships at museums and galleries, i decided to try the for-profit art world and was offered a job as the ad assistant at the magazine. i much prefer the pace of the for-profit art community and have stayed with the company for three years, with a promotion to an account manager last spring."

i just did this and got a 100.