Answer:
v = 15.23 m/s
Explanation:
Given that,
Mass of a car, m = 1110 kg
Initial velocity, u = 21 m/s
Force,F = -8000 N
Time, t = 0.9 s
We need to find the final velocity of the car.
Force, F = ma
[tex]F=\dfrac{m(v-u)}{t}\\\\v-u=\dfrac{Ft}{m}\\\\v=\dfrac{Ft}{m}+u\\\\v=\dfrac{-8000\times 0.8}{1110}+21\\\\v=15.23\ m/s[/tex]
So, the final velocity of the car is 15.23 m/s.
