The correct answer to the question is A) 35.3 J i.e the kinetic energy of the cat is 35.3 J.
CALCULATION:
As per the question, the mass of the cat m = 4.50 kg.
The cat sits on a ledge which is 0.800 m above the ground.
Hence, the height of the cat from the surface of earth h = 0.800 m.
We are asked to determine the kinetic energy of the cat when it just reaches the ground.
The potential energy of the cat at a height h is calculated as -
Potential energy P.E = mgh
= 4.50 × 9.8 × 0.800 J.
= 35.28 J
= 35.3 J
Here, g is called acceleration due to gravity. Its value is g =
From law of conservation of energy, we know that energy is neither created nor destroyed. The total energy of a system is always constant, and energy changes from one form to another form.
When the cat is at certain height from the ground, it has potential energy. When it starts jumping, its potential energy is converted into kinetic energy. When it just reaches the ground, whole of its potential energy must have converted into kinetic energy.
Hence, the kinetic energy of the cat just before reaching ground = Potential energy of the cat at height 0.800 m above the ground.
Hence, the kinetic energy of the cat just before reaching the ground is 35.3 Joule.
Answer:
If a vertical line extending down from an object's CG extends outside its area of support, the object will topple
Explanation:
We can understand better this situation using a diagram with the forces acting on it.
In the attached image we can see that when the gravity center is bouncing outside from the area of the pedestal, the object will be out of balance and will fall.
The time when the particle is at rest is at 1.63 s or 3.36 s.
The velocity is positive at when the time of motion is at .
The total distance traveled in the first 10 seconds is 847 m.
<h3>When is a particle at rest?</h3>The time when the particle is at rest is calculated as follows;
s(t) = 2t³ - 15t² + 33t + 17
The velocity is positive at when the time of motion is as follows;
.
The total distance traveled in the first 10 seconds is calculated as follows;
Learn more about motion of particles here: brainly.com/question/11066673