Answer:
His kinetic energy increases, potential energy decreases
The sum of kinetic and potential energy is a constant at any instant before he comes to rest.
Explanation:
Snowboarder is starting from a height and moving to the down direction. As he moves down his velocity increases, we know that kinetic energy is given by the expression 
, so as he moves his kinetic energy increases.
When the snowboarder is starting his potential energy is maximum(Potential energy = mgh), as he comes down his potential energy decreases.
Based on this we can conclude that the sum of potential energy and kinetic energy is a constant at any instant for a snowboarder before he comes to rest.
mgh+= Constant
Answer with Explanation:
We are given that
Mass of bullet,
We have to find the velocity of the bullet and block B after the first impact and final velocity of the carrier.
According to law of conservation of momentum
Hence, the velocity of the bullet and block B after the first impact=4.65 m/s
According to law of conservation of momentum
Answer:
OWOWOWOOWOWOWEO. PORK = PORK NOW GIOVE BRAINLIEST BC I SAID PORK = PORK
Explanation:
<h2>Answer: Medium
</h2>
The medium is the main factor that differentiates a mechanical wave from an electromagnetic wave, since the first can not propagate without its existence, while the second can propagate regardless of whether the medium exists or not.
In addition, it is the medium that will define, the propagation speed of the wave, according to its specific physical characteristics.
Therefore, the <u>correct answer</u> is a.
The final velocity of the object is 16m\s.
Hope this helps! :)
