Answer:
B) Force of gravity
Explanation:
As it is the force which acts downward on the body towards the ground, it is clearly the force gravity represented by the arrow at A.
If you mean with the visible eye, then its radiation. we cant see radiation.
get a little more detail about the question.
Buoyant force is equal to upthrust therefore
Upthrust = weight of brick in air - weight of brick in water
Upthrust = 26 - 11
Upthrust =15N
It's S.I unit is Newton (N) because it is a force.
Answer:
1.28 m
Explanation:
You are given the initial speed that is 5 m/s. Since the coin is sent upwards, this means that the speed is positive according to the co-ordinate system in the y axis. Additionally, there is the gravity that curbs the coin in the opposite direction making the final speed becomes zero at the highest point, so the gravity takes negative sign.
So, from the explanation we have:
![Vo = 5 m/s](https://tex.z-dn.net/?f=Vo%20%3D%205%20m%2Fs)
![V = 0 m/s](https://tex.z-dn.net/?f=V%20%3D%200%20m%2Fs)
![a = -9.8 m/s^2](https://tex.z-dn.net/?f=a%20%3D%20-9.8%20m%2Fs%5E2)
so, we use the following equation to find y (hight)
![V^2 = Vo^2 + 2ay](https://tex.z-dn.net/?f=V%5E2%20%3D%20Vo%5E2%20%2B%202ay)
![y = V^2 - Vo^2 / 2a](https://tex.z-dn.net/?f=y%20%3D%20V%5E2%20-%20Vo%5E2%20%2F%202a)
![y = (0 m/s)^2 - (5 m/s)^2 / 2*(-9.8 m/s^2)](https://tex.z-dn.net/?f=y%20%3D%20%280%20m%2Fs%29%5E2%20-%20%285%20m%2Fs%29%5E2%20%2F%202%2A%28-9.8%20m%2Fs%5E2%29%20)
![y = - (25 m^2 / s^2) / -19.6 m /s^2](https://tex.z-dn.net/?f=y%20%3D%20-%20%2825%20m%5E2%20%2F%20s%5E2%29%20%2F%20-19.6%20m%20%2Fs%5E2)
![y = 1.28 m](https://tex.z-dn.net/?f=y%20%3D%201.28%20m)