Respuesta :

Chelboy

Answer:

We can use option C

Initial velocity=28.3m/s

Explanation:

acceleration(a)=4.7m/s^2

distance(d)=150m

Final velocity(v)=47m/s

Initial velocity(u)=?

V^2=u^2+2xaxd

47^2=u^2+2x4.7x150

2209=u^2+1410

U^2=2209-1410

U^2=799

U=√(799)

u=28.3m/s