Answer:
Explanation:
Firstly, we have to define momentum.
Momentum is define as the product of mass and velocity.
That is P = mass×velocity
Also considering the third law of motion which states that: For every action, there is equal and opposite reaction.
Moreso, considering the 2nd law of motion which states that the rate of change in the momentum of a body is equal to the applied force and takes place in the direction of the applied force.
Now, applying P = mass×velocity
They both have same mass and velocity definitely, they will both experience same momentum.
Also from the question, the both share same velocity hence, the will both hit the wall with same velocity meaning the will both feel the same impact from the wall as well. Hence the third law of motion proves this right.
 
        
             
        
        
        
Answer: 1.39 s
Explanation:
We can solve this problem with the following equations:
 (1)
 (1)
 (2)
 (2)
Where:
 is the length the steel wire streches (taking into account 1mm=0.001 m)
 is the length the steel wire streches (taking into account 1mm=0.001 m)
 is the length of the steel wire before being streched
 is the length of the steel wire before being streched
 is the force due gravity (the weight) acting on the pendulum with mass
 is the force due gravity (the weight) acting on the pendulum with mass 
 is the transversal area of the wire
 is the transversal area of the wire
 is the Young modulus for steel
 is the Young modulus for steel
 is the period of the pendulum
 is the period of the pendulum
 is the acceleration due gravity
 is the acceleration due gravity
Knowing this, let's begin by finding  :
:
 (3)
 (3)
Where  is the diameter of the wire
 is the diameter of the wire
 (4)
 (4)
 (5)
 (5) 
Knowing this area we can isolate  from (1):
 from (1):
 (6)
 (6)
And substitute  in (2):
 in (2):
 (7)
 (7)
 (8)
 (8)
Finally:

 
        
             
        
        
        
<span>Hudson Bay drainage basin</span>