Answer:

Explanation:
Given data
Distance S=6.10 m
Initial Speed u=12.0 m/s
To find
Final Speed v
Solution
From third equation of motion we know that:

where
v is final velocity
u is initial velocity
a is acceleration
S is distance
Substitute the given values to find v

We know that:
W=Fs
200J=150N*s
s=200J/150N
s=1,33m
Answer: 10.36m/s
How? Just divide 200m by 19.3 and you will get how fast he ran per m/s