There are two types of change in matter: physical change and chemical change. ... This is called the Law of Conservation of Matter. It states that matter can never be created or destroyed, only changed and rearranged.
 
        
                    
             
        
        
        
The total displacement of the person walking from point A to point B is 300 yards.
As shown in the figure we can conclude that the required method to calculate the total displacement is the Pythagoras theorem.
<h3>Pythagoras theorem in brief :</h3>
According to the Pythagorean Theorem, the square that represents the hypotenuse, or side of a right triangle that faces the right angle, is equal to the total of the squares on the triangle's legs.(or, in popular algebraic notation, 
).
<h3>Calculation: </h3>
Let, 
a = 500
b=  300
Hence by using Pythagoras' theorem
Total displacement of the person = 
 = 
 = 
Thus the total displacement of the person from starting point is 300 yards.
Learn more about the displacement examples here: 
brainly.com/question/11188852
#SPJ4
 
        
             
        
        
        
Newton's second law is the hardest to describe as it is about momentum  (F = ma), and a lot of people don't know the concept of momentum.
Newton's first law of motion:- every object moves in a straight line unless acted upon by a force. 
Newton's 2nd law of motion:-the acceleration of an object is directly proportional to the net force exerted and inversely proportional to the item's mass. Newton's 2nd law is a quantitative description of the changes that a force can produce on the motion of a body. It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.
Newton's 3rd law of motion:- For every action, there's an equal and opposite reaction.
learn more about Newton's first law of motion here brainly.com/question/10454047
#SPJ4
 
        
             
        
        
        
Answer:
Explanation:
Time taken to complete one revolution is called time period. 
So, Time period, T = 1 s 
Diameter = 1.6 mm 
radius, r = 0.8 mm 
Let the angular speed is ω. 
The relation between angular velocity and the time period is 

ω = 2 x 3.14 = 6.28 rad/s 
The relation between the linear velocity and the angular velocity is 
v = r x ω 
v = 0.8 x 10^-3 x 6.28 
v = 0.005 m/s