Question

a body starts from rest and moves with uniform acceleration of 4 m/s^2 until it
travel distance of 800 M find the final velocity

Answer 1

hey ur answer
A=4 m/s2
s=800m
u=0 m/s

s=ut+ 1/2 at2
800=0+1/2*4*t2
800=2t2
400=t2
t=20 s
a=(v-u)/t
4=v-0/20
80=v
v=80 m/s
thanks follow me

Answer 2

heya friend!!☺☺
here's your answer!!☺☺
Given,

Initial velocity, u = 0 m / s

Acceleration, a = 4 m/s2

Distance, s = 800 m

Final velocity = ?

Using the 3rd equation of motion, which is:,
we get
2as=v²-u²

v2 - 0= 2(4)(800)

V2 = 6400

Therefore, v = 80

Therefore, the final velocity = 80 m/s

hope it helps you!!☺☺