Incomplete question. However, I provided a brief about Kinetic energy generation.
<u>Explanation:</u>
Interestingly, Kinetic energy in simple terms refers to the energy possessed by a body in motion.
It is often calculated using the formula E =   
 
A good example of creating even more kinetic energy is a hand crank toy car that moves after you wind it a little, when the car moves it is generating another measure of K.E.
 
        
             
        
        
        
There would be no mass or weight and he would float away
        
                    
             
        
        
        
Answer:
wrong statement :  Momentum is not conserved for a system of objects in a head-on collision.
Explanation:
 In a head on collision of two objects , two equal and opposite forces are created at the point of collision . These two forces create two impulses in opposite direction which results in equal and opposite changes in momentum in each of them . Hence net change in momentum is zero. In this way momentum is conserved in head on collision of two objects. 
 
        
             
        
        
        
The period T is time it takes for one complete cycle or from "trough to trough" so the reverse is trough per sec = 1/T = frequency 
        
                    
             
        
        
        
If the temperature is increased the particles gain more kinetic energy or vibrate faster. This means that they move faster and take more space.