Question

an athletic starting from rest picks up a speed of 10m/s . over a distance of 100m. find the acceleration and the time in which he completed the race.
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Answer 1

Answer:

answer in the attachment

Answer 2

Explanation:

here,

the begining velocity,u=10m/s

last velocity,v=0m/s

distance,s=100m

time,t=?

we know that,

s={(u+v)/2}×t

or,{(u+v)/2}×t=s

or,t=2s/u+v

or,t=2×100/10+0

or,t=200/10

or,t=20s

so,

the time would be 20s.

hope its help u.Thanks.