Answer:
KE = 100 J
Explanation: Should be correct 
 
        
             
        
        
        
What do you mean? I'm confused... You need to put the rest  of the question
        
             
        
        
        
The two objects with electrical charges interact, which affect the strength of that interaction <span>amount of charge. The answer is letter A. The rest of the choices do not answer the question above.</span> 
        
             
        
        
        
Find the horizontal components vcos30 ...one goes right and one goes left so they cancel each other. 
Find vertical components vsin30.....there are two of them.... so 2vcos30....hey presto... resultant velocity = 2vCos30
        
             
        
        
        
Answer:
Explanation:
I'm going to assume that all the givens are in m/s. If I am correct, The orange line is speeding up. It is going from 4 m/s to 7 m/s. Its slant is from lower left to upper right. It is increasing in speed.
The green line is slowing down. It is going from 4 to 0 m/s. It's slant is from upper left to lower right.
The blue line is horizontal. It is neither slowing down or speeding up.