Question

Given : v=0,a=4m/s^2,s=128m find t​

Answer 1

Answer:

Uniform acceleration =a=4m/s2

Time=t=?

Initial speed =u=0m/s

Distance =800m

Final velocity =v=?

From Second equation of motion:

S=ut + 1/2at^2

800=0*t +1/2 4*t^2

t^2=400

t=20sec

V=u+at

=0+4×20

=80m/s

Therefore final velocity =80m/s

Explanation: