Answer:
Explanation:
Given
When we drop an object from height , suppose h
it takes time T
using equation of motion
![h=ut+\frac{1}{2}at^2](https://tex.z-dn.net/?f=h%3Dut%2B%5Cfrac%7B1%7D%7B2%7Dat%5E2)
where
![h=displacement](https://tex.z-dn.net/?f=h%3Ddisplacement)
![u=initial\ velocity](https://tex.z-dn.net/?f=u%3Dinitial%5C%20velocity)
![a=acceleration](https://tex.z-dn.net/?f=a%3Dacceleration)
![t=time](https://tex.z-dn.net/?f=t%3Dtime)
here
because it dropped from a certain height
![h=\frac{1}{2}gT^2](https://tex.z-dn.net/?f=h%3D%5Cfrac%7B1%7D%7B2%7DgT%5E2)
![T=\sqrt{\frac{2h}{g}}](https://tex.z-dn.net/?f=T%3D%5Csqrt%7B%5Cfrac%7B2h%7D%7Bg%7D%7D)
When height is increases to three times of original height
i.e. ![h'=3 h](https://tex.z-dn.net/?f=h%27%3D3%20h)
then time period becomes
![T'=\sqrt{\frac{2\times 3h}{g}}](https://tex.z-dn.net/?f=T%27%3D%5Csqrt%7B%5Cfrac%7B2%5Ctimes%203h%7D%7Bg%7D%7D)
![T'=\sqrt{3}T](https://tex.z-dn.net/?f=T%27%3D%5Csqrt%7B3%7DT)
The x position will be "12 m" and the y position will be "-4.9 m".
According to the question,
Along x direction, Initial velocity:
Along x direction, Acceleration is:
Along y direction, Acceleration is:
Time,
→ The X coordinate will be:
= ![12\times t](https://tex.z-dn.net/?f=12%5Ctimes%20t)
= ![12\times 1](https://tex.z-dn.net/?f=12%5Ctimes%201)
= ![12 \ m](https://tex.z-dn.net/?f=12%20%5C%20m)
→ The Y coordinate will be:
= ![-(u_y t+\frac{1}{2}a_y t^2 )](https://tex.z-dn.net/?f=-%28u_y%20t%2B%5Cfrac%7B1%7D%7B2%7Da_y%20t%5E2%20%29)
= ![0+4.9 t^2](https://tex.z-dn.net/?f=0%2B4.9%20t%5E2)
= ![4.9 \ t^2](https://tex.z-dn.net/?f=4.9%20%5C%20t%5E2)
= ![-4.9\times 1^2](https://tex.z-dn.net/?f=-4.9%5Ctimes%201%5E2)
= ![-4.9 \ m](https://tex.z-dn.net/?f=-4.9%20%5C%20m)
Thus the above answer is correct.
Learn more:
brainly.com/question/17108357
Along with neurons, the nervous system contains other specialized cells called glial cells (or simply glia), which provide structural and metabolic support. Nervous systems are found in most multicellular animals, but vary greatly in complexity.
Friction is caused by the uneven surfaces of touching objects
Answer:
the speed of the object has become constant.
Explanation:
At terminal velocity, air resistance equals in magnitude the weight of the falling object. Because the two are oppositely directed forces, the total force on the object is zero, and the speed of the object has become constant.