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To solve this type of problem, the formula for linear-motion and acceleration will be used. The formula is stated below:

Vf = Vi + at

Where:

Vf = final velocity
Vi = initial velocity
a = acceleration
t = time

Substituting the given values into the equation:

Vf = 7 m/s + (0.8 ./s^2)*(2 s)
Vf = 8.6 m/s

Given:

The formula of VF is v=u+at

Coressponding to:

v= final velocity

 u= initial velocity which is 7m per second

a= acceleration which is 0.08m per second^2

t= time which is 2.0 seconds

 

Substitute: 

y=u+a

y=7+(0.80*2)

7+1.6=8.6 

VF=8.6 m/second^2

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