Question 1.
Given:
Mass = 1200 kg
Velocity = 100 km per hour.
Let's find the change in momentum it will expperience.
To find the change in momentum, apply the formula:

Where:
Δp is the change in momentum
m is the mass of the car = 1200 kg
vf is the final velocity
vi is the initial velocity.
Here, the final velocity is = 0 m/s
The initial velocity is = 100 km/h
Let's convert the initial velocity to m/s.
Where:
1 m/s = 3.6 km/h
100 km/h = 100/3.6 = 27.78 m/s
Input the values into the formula and solve for Δp.
We have:

Therefore, the change in momentum is 33333.33 kg.m/s
Question 2.
Since the safety zone for momentum is 0 to 1000 kg.m/s, to find the minimum velocity of the car, substitute 1000 kg.m/s for Δp and solve for the final velocity vf
We have:

Therefore, the minimum velocity the car can slow down to a velocity is 26.94 m/s.
ANSWER:
(a). 33333.33 kg/m.s
(b). 26.94 m/s