Answer:
1.4719 m per sec
Explanation:
Hello
Kinetic energy is the energy associated with the movement of objects. Although there are many forms of kinetic energy
the formula to use is
![E=\frac{mv^{2} }{2}](https://tex.z-dn.net/?f=E%3D%5Cfrac%7Bmv%5E%7B2%7D%20%7D%7B2%7D)
where m is the mass of the object and v the velocity
lets see the kinetic energy of the sprinter running
![E=\frac{65 Kg*10(\frac{m}{s} ^)){2} }{2} \\\\E=\frac{65 *100 }{2} \\E=3250 Joules\\\\](https://tex.z-dn.net/?f=E%3D%5Cfrac%7B65%20Kg%2A10%28%5Cfrac%7Bm%7D%7Bs%7D%20%5E%29%29%7B2%7D%20%7D%7B2%7D%20%5C%5C%5C%5CE%3D%5Cfrac%7B65%20%2A100%20%7D%7B2%7D%20%5C%5CE%3D3250%20Joules%5C%5C%5C%5C)
Now, the elephant must have the same kinetic energy
![E=\frac{m*v_{2} ^{2} }{2} \\\\E*2=m*v_{2} ^{2}\\ \frac{2E}{m} =v_{2} ^{2} \\\sqrt{\frac{2E}{m} } =v_{2} \\\\\\v_{2} =\sqrt{\frac{2*3250}{3000} }\\ \\v_{2} =1.4719 \frac{m}{s} \\\\](https://tex.z-dn.net/?f=E%3D%5Cfrac%7Bm%2Av_%7B2%7D%20%5E%7B2%7D%20%7D%7B2%7D%20%5C%5C%5C%5CE%2A2%3Dm%2Av_%7B2%7D%20%5E%7B2%7D%5C%5C%20%5Cfrac%7B2E%7D%7Bm%7D%20%3Dv_%7B2%7D%20%5E%7B2%7D%20%5C%5C%5Csqrt%7B%5Cfrac%7B2E%7D%7Bm%7D%20%7D%20%3Dv_%7B2%7D%20%20%5C%5C%5C%5C%5C%5Cv_%7B2%7D%20%3D%5Csqrt%7B%5Cfrac%7B2%2A3250%7D%7B3000%7D%20%7D%5C%5C%20%5C%5Cv_%7B2%7D%20%3D1.4719%20%5Cfrac%7Bm%7D%7Bs%7D%20%5C%5C%5C%5C)
it works only the positive root, so the elephant must to walk to 1.4719 m/s to have the same kinetic energy.
Have a great day
Compressions are the areas of high pressure while rarefractions are low pressure area
The mass of a house is up to 120 meters
Answer
The metric SI unit of force is the kilogram-metre per second squared which is called the newton (1 N = 1 kg-m/s2).
Answer:
Option (E)
Explanation:
Nuclear energy is directly obtained from the elements that are radioactive in nature. The use of nuclear energy doesn't emit any greenhouse gas and there is no burning of fossil fuels. In order to extract the non-renewable resources from a particular area, a huge amount of money is required to carry out the entire process.
So in comparison to that, nuclear energy is much efficient to use but there is a problem with the disposal of the waste materials that are released in the mines. This is harmful as there is continuous emission of radiation releasing from these wastes.
Nuclear energy is therefore carried out at a relatively isolated place away from the human settlement areas and is quite workable in comparison to the non-renewable sources of energy.
Thus, the correct answer is option (E).