Answer:
Explanation:
To find the direction of this vector we need o find the angle that has a tangent of the y-component over the x-component:
 but since we are in Q2 we have to add 180 degrees to that angle giving us 165.5 degrees
 but since we are in Q2 we have to add 180 degrees to that angle giving us 165.5 degrees
 
        
             
        
        
        
Answer:
a.) L = 2.64 kgm^2/s 
b.) V = 4.4 m/s
Explanation: Jessica stretches her arms out 0.60 m from the center of her body. This will be considered as radius. 
So,
Radius r = 0.6 m
Mass M = 2 kg
Velocity V = 1.1 m/s
Angular momentum L can be expressed as;
L = MVr
Substitute all the parameters into the formula 
L = 2 × 1.1 × 0.6 = 1.32kgm^2s^-1
the combined angular momentum of the masses will be 2 × 1.32 = 2.64 kgm^2s-1
b. If she pulls her arms into 0.15 m, 
New radius = 0.15 m
Using the same formula again 
L = 2( MVr)
2.64 = 2( 2 × V × 0.15 )
1.32 = 0.3 V
V = 1.32/0.3
V = 4.4 m/s
Her new linear speed will be 4.4 m/s
 
        
             
        
        
        
Answer:
it means that velocity of a body rises by 9.8m/s each second if the air resistance is nrelated 
mark me 
 
        
             
        
        
        
2 times 10 to the power of 5 is your answer.