Answer:
19.0 m/s
Explanation:
First of all, we can find the acceleration of the object by using Newton's second law:
[tex]F=ma[/tex]
where
F = 200 N is the net force applied to the object
m = 50.0 kg is the mass of the object
a is the acceleration
Solving for a,
[tex]a=\frac{F}{m}=\frac{200 N}{50.0 kg}=4.0 m/s^2[/tex]
Now we can find the final speed of the object:
[tex]v=u+at[/tex]
where
u = 3.0 m/s is the initial speed
a = 4.0 m/s^2 is the acceleration
t = 4.0 s is the time
Substituting,
[tex]v=3.0 m/s + (4.0 m/s^2)(4.0 s)=19.0 m/s[/tex]
