Answer: 
Explanation:
According to the conservation of linear momentum principle, the initial momentum  (before the collision) must be equal to the final momentum
 (before the collision) must be equal to the final momentum  (after the collision):
 (after the collision):
 (1)
 (1)
In addition, the initial momentum is:
 (2)
 (2)
Where:
 is the mass of the comet
 is the mass of the comet
 is the mass of the asteroid
 is the mass of the asteroid
 is the velocity of the comet, which is positive
 is the velocity of the comet, which is positive
 is the velocity of the asteroid, since it is at rest
 is the velocity of the asteroid, since it is at rest
And the final momentum is:
 (3)
 (3)
Where:
 is the final velocity
 is the final velocity 
Then :
 (4)
 (4)
Isolating  :
:
 (5)
 (5)

Finally:
 This is the final velocity, which is also in the positive direction.
 This is the final velocity, which is also in the positive direction.
 
        
             
        
        
        
Answer:
1.991 × 10^(8) N/m²
Explanation:
We are told that its volume increases by 9.05%. 
Thus; (ΔV/V_o) = 9.05% = 0.0905
To find the force per unit area which is also pressure, we will use bulk modulus formula;
B = Δp(V_o/ΔV)
Making Δp the subject gives;
Δp = B(ΔV/V_o)
Now, B is bulk modulus of water with a value of 2.2 × 10^(9) N/m²
Thus;
Δp = 2.2 × 10^(9)[0.0905]
Δp = 1.991 × 10^(8) N/m²
 
        
             
        
        
        
There's the acceleration of the car that provides a force and the normal force of the seat cushion which pushes upwards against the passenger
        
             
        
        
        
Answer:
900
Explanation:
v = s / t = 9000m / 10 s = 900m/s