Ware them down, its like rubbing two pieces of chalk together.
Answer:
The correct answer is d. tension pneumothorax.
Explanation:
The increasing build-up of air that is in the pleural space is what we call the tension pneumothorax and this happens due to the lung laceration that lets the air to flee inside the pleural space but it does not return.
The potential energy of the body is "200 Joule".
According to the question,
Mass,
Height,
or,
= 2 m
As we know,
→ The potential energy will be:
= 
By putting the given values, we get
= 
= 
Thus the above answer is right.
Learn more about potential energy here:
brainly.com/question/23859978
the answer is the speed of blue ball after collision is 2.6v