Answer:
9 m/s
Explanation:
For a uniformly accelerated motion, the speed at time t is given by:
[tex]v(t) = u +at[/tex]
where
u is the initial speed
a is the acceleration
t is the time
In this problem, we have:
u = 0 m/s is the initial speed
a = 4.5 m/s^2 is the acceleration
t = 2 s is the time
Substituting into the equation, we find
[tex]v(2 s)=u+at=0 +(4.5 m/s^2)(2 s)=9 m/s[/tex]
