It can never be shorter than a component - magnitude of avector is the square root of the sum of the components squared, and a square function never produces a negative number. However, it can be the same size as its component, if that component is the only one
        
             
        
        
        
Distance travelled in south direction= 1.5hr*0.75km/hr= 1.125km
Distance travlled in north direction= 0.90*2.5=2.25
Net displacement = 2.25-1.125= 1.125 to the north
        
             
        
        
        
Answer:

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Explanation:
Given:
- mass of particle A,  
- mass of particle B,  
- mass of particle C,  
- All the three particles lie on a straight line.
- Distance between particle A and B,  
- Distance between particle B and C,  
Since the gravitational force is attractive in nature it will add up when enacted from the same direction.
<u>Force on particle A due to particles B & C:</u>



<u>Force on particle C due to particles B & A:</u>
<u /> <u />
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<u>Force on particle B due to particles C & A:</u>
<u /> <u />
<u />
<u /> <u />
<u />
<u /> <u />
<u />
 
        
             
        
        
        
Answer:
Power, P = 600 watts
Explanation:
It is given that,
Mass of sprinter, m = 54 kg
Speed, v = 10 m/s
Time taken, t = 3 s
We need to find the average power generated. The work done divided by time taken is called power generated by the sprinter i.e.

Work done is equal to the change in kinetic energy of the sprinter.


P = 900 watts
So, the average power generated by the sprinter is 900 watts. Hence, this is the required solution.