The change in momentum of the car is 45,000 kg m/s
Explanation:
The change in momentum of an object is given by:
[tex]\Delta p = m(v-u)[/tex]
where
m is the mass of the object
u is its initial velocity
v is its final velocity
For the car in this problem, we have
m = 900 kg
u = 30 m/s
v = 80 m/s
Therefore, the change in momentum is:
[tex]\Delta p = (900)(80-30)=45,000 kg m/s[/tex]
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