Question

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 ?​

Answer 1

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

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