please, give the question properly.
 
        
             
        
        
        
The velocity of  pluck 1 is 12 m/s west.
<h3>What is the conservation of momentum?</h3>
The principle of the conservation of the linear momentum states that momentum before collision is equal to momentum after collision.
Now given that;
m1u1 + m2u2 = m1v1 + m2v2
(0.1 * 15) - (0.1 * 12) = 0.1* v + (0.1 * 15)
1.5 - 1.2 = 0.1v + 1.5
0.3 - 1.5 = 0.1v 
v = -1.2/0.1
v = - 12 m/s
Hence, the velocity of  pluck 1 is 12 m/s west.
Learn  more about linear momentum:brainly.com/question/27988315
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Answer:
True 
Explanation:
Because they are central to the human experience and are related to everything we do .
 
        
             
        
        
        
Answer:
  Terminal velocity of object = 12.58 m/s
Explanation:
  We know that the terminal velocity is attained when drag force and gravitational force are of the same magnitude.
 Gravitational force = mg = 80 * 9.8 = 784 N
 Drag force = 
 Equating both, we have
     
   So v = 12.58 m/s or v = -15.58 m/s ( not possible)
  So terminal velocity of object = 12.58 m/s     
 
        
             
        
        
        
Answer:
1.648 m/s
Explanation:
1 revolution equals 2pi radians. 
Calculate the angular velocity by taking 2pi x v, then divide by 60 seconds.
To convert this to m/s, simply take this answer and multiply it by 0.305m (a.k.a. the radius of the circle).