Explanation:
Science says that youngest rock can be found in between ocean .
So plates should move away from each other to form ocean .
Option C is correct
 
        
                    
             
        
        
        
The energy conservation and trigonometry we can find the results for the questions about the movement of the acrobat are;
      a) The maximum speed is v = 4.89 m / s
      b) The maximum height is h = 1.22 m
The energy conservation is one of the most fundamental principles of physics, stable that if there are no friction forces the mechanistic energy remains constant. Mechanical energy is the sum of the kinetic energy plus the potential energies.
                Em = K + U
Let's write the energy in two points.
 Starting point. Highest part of the oscillation
             Em₀ = U = m g h
Final point. Lower part of the movement
              = K = ½ m v²
 = K = ½ m v²
Energy is conserved.
             Emo =  
  
             m g h = ½ m v²
             v² = 2 gh
Let's use trigonometry to find the height, see attached.
          h = L - L cos θ
          h = L (1- cos θ)
They indicate that the initial angle is tea = 48º and the length is L = 3.7 m, let's calculate.
          h = 3.7 (1- cos 48)
           h = 1.22 m
this  is the maximum height of the movement.
Let's calculate the velocity.  
            
  
           v = 4.89 m / s
In conclusion using the conservation of energy and trigonometry we can find the results for the questions about the movement of the acrobat are;
      a) The maximum speed is v = 4.89 m / s
      b) The maximum height is h = 1.22 m
Learn more here: brainly.com/question/13010190
 
        
             
        
        
        
Answer:
A) Increases by a factor of 2
Explanation:
Kinetic energy can be defined as an energy possessed by an object or body due to its motion. 
Mathematically, kinetic energy is given by the formula;

Where;
K.E represents kinetic energy measured in Joules. 
M represents mass measured in kilograms. 
V represents velocity measured in metres per seconds square.
Given that mass, m = 2m
Substituting into the equation, we have;
K.E = ½mv²
K.E = ½*2mv²
Cross-multiplying, we have;
2K.E = 2mv²
Hence, if the mass of an object increases by a factor 2, kinetic energy is increased by a factor of 2. 
 
        
             
        
        
        
Answer: 40.4M/s
Solution: 46.6/1.15 = 40.4347826 then round it to a single decimal point, since 3 is lower than 5 it will be rounded to 40.4