Answer:
The change in momentum is -120000.
Step-by-step explanation:
Given : A 2,000-kg test car, traveling 60 m/s hits a brick wall. Using motion pictures, the time involved is determined to be 0.050 s.
To find : What is the change in momentum of the car?
Solution :
The mass of the car is m=2000 kg
The initial velocity of the car is [tex]V_i=60 m/s[/tex]
A car hits the wall, [tex]V_f=0 m/s[/tex]
Change in momentum is [tex]I=m(V_f-V_i)[/tex]
Substitute the value,
[tex]I=2000(0-60)[/tex]
[tex]I=-120000[/tex]
The change in momentum is -120000.
