Answer:
a useful sporting analogy ... Teachers of science routinely use analogies to help ... balls over the bar and you will probably find that.
 
        
             
        
        
        
Power = Work done / time
Work done = Force * Distance
                 =  300 N *  1.5 m =  450 J
Power =  450 / 0.75 = 600 Watts.
        
             
        
        
        
The resultant in the x-direction:
Rx = F1 + F2 = 2.5 N - 1 N =  1.5 N .
The resultant in the y-direction:
Ry = F3 + F4 = 2 N - 3 N =  -1 N.
        
             
        
        
        
Newtons are used to measure force