One of your 5 senses because your 5senses are hearing, smelling, seeing, taste, touching
This question involves the use of the equations of motion for vertical motion.
The time taken by the stones P and Q to reach the ground is the same, that is "2 s".
The velocity with which Q hits the ground is "20 m/s".
The time taken by the stones to reach the ground can be calculated by using the second equation of motion for the vertical motion:
![h = v_it+\frac{1}{2}gt^2](https://tex.z-dn.net/?f=h%20%3D%20v_it%2B%5Cfrac%7B1%7D%7B2%7Dgt%5E2)
For both the stones P and Q:
h = height = 20 m
= initial velocity = 0 m/s
t = time = ?
g = acceleration due to gravity = 10 m/s²
Therefore,
![20\ m = (0\ m/s)t+\frac{1}{2}(10\ m/s^2)(t)^2\\\\t = \sqrt{\frac{20\ m}{5\ m/s^2}}](https://tex.z-dn.net/?f=20%5C%20m%20%3D%20%280%5C%20m%2Fs%29t%2B%5Cfrac%7B1%7D%7B2%7D%2810%5C%20m%2Fs%5E2%29%28t%29%5E2%5C%5C%5C%5Ct%20%3D%20%5Csqrt%7B%5Cfrac%7B20%5C%20m%7D%7B5%5C%20m%2Fs%5E2%7D%7D)
<u>t = 2 s</u>
<u></u>
Hence, the time taken by both the stones to reach the ground <u>is the same</u>.
To find the final velocity of stone Q we will use the first equation of motion for the vertical motion:
![v_f=v_i+gt\\v_f = 0\ m/s+(10\ m/s^2)(2\ s)\\v_f = 20\ m/s](https://tex.z-dn.net/?f=v_f%3Dv_i%2Bgt%5C%5Cv_f%20%3D%200%5C%20m%2Fs%2B%2810%5C%20m%2Fs%5E2%29%282%5C%20s%29%5C%5Cv_f%20%3D%2020%5C%20m%2Fs)
Learn more about equations of motion here:
brainly.com/question/20594939?referrer=searchResults
The attached picture shows the equations of motion in the horizontal and vertical directions.
no. energy is not created or destroyed, just transformed.
a hot light source is less efficient than a cold one ... heat is not light ...
Answer: Plasticity
Explanation: Plasticity is defined as the brain's ability to adapt to changes that may result from damage or birth defects. The adaptation that usually occurs is when affected area of the brain is taken over by healthy functioning cortex.
According to definition of general chemistry matter is any substance which has atleast a mass and occupies a volume.
Matter is of three types
- Solid
- Liquid
- Gas