3 - b) weight decreases
4 -a) 50 kg as mass is same everywhere 
5 - b) 200 dynes
        
             
        
        
        
Objects and substances in motion have Kinetic Energy.
Explanation:
Kinetic Energy is the motion of objects, substances, molecules, atoms .
Whenever an object starts to move, it is in motion. Kinetic Energy is generated, when the object moves and its potential energy gets dropped with the movement. Kinetic Energy is found in every object that moves. 
The Kinetic Energy of an object depends both on its mass and its speed. Kinetic Energy increases as mass and speed are increased. 
Example:  By using the wind flow from wind turbines, the Kinetic energy in the wind can be transformed to generate electricity by using generators.
 
        
             
        
        
        
Answer:
100J
Explanation:
Kinetic energy=1/2mv^2
Kinetic energy=(1/2 x 8)x5^2
Kinetic energy=4x25
Kinetic energy=100
100J
 
        
             
        
        
        
Answer:
both 
Explanation:
because when it is hot in summer 5hat is the air and the sund u can warm things up and then it get hot
 
        
             
        
        
        
They are fused in the core of the star due to great pressures and temperatures.  They are made all the way through iron.  At that point the star dies.  If it is a really large star it will become a supernova when it dies, creating all of the elements beyond iron as well, but only in its death.  No star can create anything beyond iron in its life cycle