Answer:
3rd one
Explanation:
they are pointing right 2 left because most things start at the right in which even if the force of both direction is the same, it acquires more force. i learned this from my science teacher yesterday in Zoom
To solve this problem we will apply the concepts related to the gravitational force expressed in Newton's statements as the product between the constant of gravity, the two masses to study and the distance to the square that separates them. Mathematically this can be described as
![F = \frac{GmM}{d^2}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7BGmM%7D%7Bd%5E2%7D)
Here,
G = Gravitational constant
m = Mass 1
M =Mass 2
d = Distance between them
Replacing with our values,
![F = \frac{(6.674*10^{-11}N\cdot m^2 /kg^2)(5.0kg)(1.25kg)}{(0.140m)^2}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7B%286.674%2A10%5E%7B-11%7DN%5Ccdot%20m%5E2%20%2Fkg%5E2%29%285.0kg%29%281.25kg%29%7D%7B%280.140m%29%5E2%7D)
![F = 2.12*10^{-8}N](https://tex.z-dn.net/?f=F%20%3D%202.12%2A10%5E%7B-8%7DN)
Therefore the force of gravity is ![2.12*10^{-8}N](https://tex.z-dn.net/?f=2.12%2A10%5E%7B-8%7DN)
If the ball didn't make it to the end of the journey, then it presumably ran out of kinetic energy, said energy, energy of movement, either being converted to potential energy, or to heat energy as the case may be.
Conservation of energy means that the total, often the kinetic plus the potential, is constant. One decreases and the other increases, and vice versa, so that they all add up to the same amount.
ball released from rest at top of a track will have zero initial velocity. ball at the top of the track will have a potential energy of mgh. ball's vertical height above bottom of track gives the potential energy.
Explanation:
momentum = mass x velocity
momentum = 40 x 20 = 800kgm/s
The speed of sound at 46 C is 800.91 mph