After the collision the magnitude of the momentum of the system is Mv
Given:
mass of 1st object = M
speed of 1st object = v
mass of 2nd object = M
speed of 2nd object = 0
To Find:
magnitude of the momentum after collision
Solution: Product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction. Isaac Newton's second law of motion states that the time rate of change of momentum is equal to the force acting on the particle.
Applying conservation of linear momentum
 Mv + M(0) = 2MV
 Mv = 2MV
 V = v/2
So, after collision momentum is 
 p = 2MV = 2xMxv/2 = Mv
So, after collision momentum is Mv
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Answer:2.6 h
Explanation:
Given
Total Trip distance=450 miles
Meeting starts after 10.8 hours 
safe Fastest speed is  55 mi/h
so if he drives all the to the meeting with max speed then it takes 
and total allowable time is 10.8 
Therefore longest time he can spend over dinner is 
 
        
             
        
        
        
Answer:
1.275 m
Explanation:
Let the maximum height reached be h.
Here initial velocity, u = 5 m/s
Final velocity, V = 0
Use third equation of motion
V^2 = u^2 + 2 g h 
0 = 25 - 2 × 9.8 × h
h = 25/19.6 = 1.275 m
 
        
                    
             
        
        
        
If light travels from oil to water at an angle, what happens to the direction of the light ray in water with respect to the normal, is it moves away from the normal.
        
             
        
        
        
Answer:
tree frog i believe hope its right