Answer to Question #4938 in Mechanics | Relativity for Nancy
Vi*t + (a*t^2)/2 = d
So, Vi = (d - (a*t^2)/2)/t = d/t + a*t/2 = 40/10 + 5*10/2 = 29 m/s.
Now we can find the object's final velocity Vf:
Vf = Vi + a*t = 29 + 5*10 = 79 m/s.
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