Question

a body starts from rest and moves with a uniform acceleration of 4m/s2 until it travels a distance of 800m, find the final velocity?​

Answer 1

Answer:

Your answer is below:

Explanation:

a=4m/s2

s=800m

u=0m/s2

s =ut+1/2at2

800=0+1/2*4*t2

800=2t2

400=t2

t=20s

a=(v-u)/t

4=v-0/20

80=v

v=80m/s