Answer:
680 J
Explanation:
Mechanical energy = potential energy + kinetic energy
ME = PE + KE
ME = mgh + ½ mv²
ME = (77.1 kg) (9.8 m/s²) (0.90 m) + ½ (77.1 kg) (0 m/s)²
ME = 680 J
 
        
                    
             
        
        
        
The electric force between two charged particles can be increased by decreasing the distance between the two particles.
<h3>How to increase electric force between two charged particles.</h3>
The technique of decreasing the separation distance between objects increases the force of attraction or repulsion between the objects. while 
increasing the separation distance between objects decreases the force of attraction or repulsion between the objects. 
 
Read more on Electric Force:
brainly.com/question/17692887
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The answer to this is B, C, and D. hope this helped
 
        
             
        
        
        
<span>The maximum oxygen uptake is known as the VO max.</span>
        
             
        
        
        
Velocity = displacement/time
1.6 = 253/t
t = 158.125
It takes them about 158 seconds