glin456654 glin456654
  • 24-10-2017
  • Mathematics
contestada

a sprinter starts from rest, and accelerates at 1.87 m/s2 over a distance of 14.0 m. what is her final velocity

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alliebitz
alliebitz alliebitz
  • 10-09-2021

the correct answer is 7.24

a(t) = 1.87

v(t) = 1.87t

x(t) = 1.87 / 2 t^2

final velocity = time, when x(t) = 14

so, 1.87 / 2 t^2 = 14

tƒ = √28 / 1.87

vƒ = 1.87 * √28 / 1.87

I got this answer from another person and it helped me so hopefully it helps someone else too!!

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