Answer:
[tex]39000\ \text{kg m/s}[/tex]
West
Explanation:
m = Mass of car = [tex]1.3\times 10^{3}\ \text{kg}[/tex]
t = Time = 9 seconds
u = Initial velocity = 30 m/s
v = Final velocity = 0
Impulse is given by
[tex]J=m(v-u)\\\Rightarrow J=1.3\times 10^3(0-30)\\\Rightarrow J=-39000\ \text{kg m/s}[/tex]
The magnitude of the total impulse applied to the car to bring it to rest is [tex]39000\ \text{kg m/s}[/tex].
The direction is towards west as the sign is negative.
