Question

After 15 minutes, the jogger in problem 1gets tired, and during the next 2 seconds , she reduces her speed to1.8 m/s. What was her average acceleration during these 2 seconds .

Answer 1

hey!!
your answer is here!!

=>the acceleration will be 

a = (v-u) / t

u = 2.2 m./s

v = 1.8 m/s

t = 2s

so,

a = (1.8 - 2.2) / 2

thus,

a = -0.2 m/s


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