The answer to this question is that --- The momentum possessed by a body is generally defined as the product of its mass and velocity.
Momentum is a vector and it also has magnitude as it is the product of the multiplication of the mass and velocity. 
        
             
        
        
        
Answer:

Explanation:
For a linear elastic material Young's modulus is a constant that is given by:

Here, F is the force exerted on an object under tensio, A is the area of the cross-section perpendicular to the applied force,  is the amount by which the length of the object changes and
 is the amount by which the length of the object changes and   is the original length of the object. In this case the force is the weight of the mass:
 is the original length of the object. In this case the force is the weight of the mass:

Replacing the given values in Young's modulus formula:

 
        
             
        
        
        
The land was frozen everywhere and a part of the ocean froze over to create a bridge between two countries. Some people may disagree with me over the ice bridge, though.
        
                    
             
        
        
        
Ur answer is 3 and i'm sure of it 
        
             
        
        
        
Answer:
4.6s
Explanation:
v=u+at
0=22.5+(-9.8)t
-22.5=-9.8t
 t=-22.5/-9.8
 t=2.295 s
The total time will double 
2.295×2=4.59s
 =4.6s