Answer:
a is the answer to the question
 
        
             
        
        
        
Answer:0.25 kg-m/s
Explanation:
Given
mass of blob 
initial velocity 
time of collision 
we know Impulse is equal to change in momentum
initial momentum 

Final momentum 
 as final velocity is zero
 as final velocity is zero
Impulse 


 
        
             
        
        
        
Answer:
   t = 0.714 s and  x = 5.0 m
Explanation:
This is a projectile throwing exercise, in this case when the skater leaves the bridge he goes with horizontal speed
          vₓ = 7.0 m / s
Let's find the time it takes to get to the river
          y = y₀ + v_{oy} t - ½ g t²
the initial vertical speed is zero and when it reaches the river its height is zero
         0 = y₀ + 0 - ½ g t²
         t =  
         t = ra 2 2.5 / 9.8
         t = 0.714 s
the distance traveled is
        x = vₓ t
        x = 7.0 0.714
        x = 5.0 m
 
        
             
        
        
        
A spring scale measures weight because <span>It works by Hooke's Law, which states that the force needed to extend a </span>spring<span> is proportional to the distance that </span>spring<span> is extended from its rest position. Therefore, the </span>scale<span> markings on the </span>spring<span> balance are equally spaced. A </span>spring scale<span> can</span>not measure mass<span>, only </span>weight<span>. hope that helped</span>