<span>From electrical energy to kinetic energy.</span>
3.87 i think but if its not correct then let me know.
When cattle are processed, the most likely use for the animals' skin is in
the production of Leather.
<h3 /><h3>Animals used for Leather production</h3>
The commonly used animals in leather production is however cattle and
they amount for a large percentage of leather present today. They also
involve various techniques such as tanning and crusting to ensure
conversion to leather.
Read more about Leather here brainly.com/question/2494725
Answer:
Kinetic energy of the projectile at the vertex of the trajectory: 
.
Work done when firing this projectile: 
.
Explanation:
Since the drag on this projectile is negligible, the horizontal velocity 
of this projectile would stay the same (at 
) throughout the flight.
The vertical velocity 
of this projectile would be 
at the vertex (highest point) of its trajectory. (Otherwise, if 
, this projectile would continue moving up and reach an even higher point. If 
, the projectile would be moving downwards, meaning that its previous location was higher than the current one.)
Overall, the velocity of this projectile would be 
when it is at the top of the trajectory. The kinetic energy 
of this projectile (mass 
) at the vertex of its trajectory would be:
.
Apply the Pythagorean Theorem to find the initial speed of this projectile:
.
Hence, the initial kinetic energy of this projectile would be:
.
All that energy was from the work done in launching this projectile. Hence, the (useful) work done in launching this projectile would be .
