The answer is C. 
Ionic compounds are those that bring together anions and cations bonded together by ionic bonds. The electrostatic forces of the different charges are significant in the bonds that make them strong hence require high energy to break them (high melting point).  Due to the regular structure of ionic compound that tend to form lattices in solid form, when struck, they shatter along the lines of weakness of the lattice.  
 
        
                    
             
        
        
        
The three different motions are;
- The upward motion of the woman is constant
- The downward motion of the woman is also constant
- The horizontal motion of the woman is zero.
<h3>
What is force diagram?</h3>
Force diagram is a pictorial or graphical illustration of different forces acting on object.
In this given question, there two forces acting on the woman as depicted in the force diagram.
- The first force is surface force (Fs)
- The second force is force of Earth (FE)
In the given force diagram, the woman is in equilibrium, this implies that the surface force and the Earth force are equal.
The three different types of motion of the woman that are consistent with the force diagram include the following;
- The upward motion of the woman is constant
- The downward motion of the woman is also constant
- The horizontal motion of the woman is zero since there is no horizontal force on the woman.
Learn more about force diagram here: brainly.com/question/3624253
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Explanation:
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. 
 
        
             
        
        
        
Answer:
The ball reaches Barney  head in  
Explanation:
From the question we are told that 
  The rise velocity is  
   The height considered is 
    The horizontal velocity of the large object is  
    
Generally from kinematic equation  
    
Here s is the distance of the object from Barney head , 
         u is the velocity of the object along the vertical axis which is equal but opposite to the velocity of the helicopter 
So  
      
So 
     
=  
Solving the above equation using quadratic formula  
     The value of  t obtained is  