Answer:
Explanation:
When objects collide, energy can be transferred from one object to another, thereby changing their motion. In such collisions, some energy is typically also transferred to the surrounding air; as a result, the air gets heated and sound is produced.
Answer:
The pressure at point 2 is 
Explanation:
From the question we are told that
The speed at point 1 is 
The gauge pressure at point 1 is 
The density of water is 
Let the height at point 1 be
then the height at point two will be

Let the diameter at point 1 be
then the diameter at point two will be

Now the continuity equation is mathematically represented as

Here
are the area at point 1 and 2
Now given that the are is directly proportional to the square of the diameter [i.e
]
which can represent as

=> 
where c is a constant
so 
=> 
=> 
Now from the continuity equation
=>
=>

Generally the Bernoulli equation is mathematically represented as

So
=> 
substituting values


1.6e-6 gl on the rest of your physics its a killer for me too
Answer: mass and speed.
Explanation: The two main factors that affect kinetic energy are mass and speed. Why? Because the motion of an object depends on how fast it's traveling.