My guess would be because the gravity from the Earth's core is constantly pulling the ball towards the ground. It's like the moon. Why doesn't the moon just float away in space? Because Earth's gravitational pull keeps it rotating around it. Therefore, the ball will always be pulled towards the core which keeps it from from rolling forever due to friction. But i may be wrong, even though this a quite a good answer, hope it is right!
If you look it up in Google or you read your textbook! it says the same thing almost, that Convex Mirror can only form virtual images, Only a Concave mirror can produce real images.
Distance in the y direction.
Answer:
1.16 x 10⁻⁸N
Explanation:
Given parameters:
Mass of the two asteroids = 50000kg
Distance between the asteroids = 3800m
Unknown:
Gravitational force between the two asteroids = ?
Solution:
To solve this problem, we apply the newton's law of universal gravitation:
Fg =
G is the universal gravitation constant
r is the distance between them
So;
Fg = = 1.16 x 10⁻⁸N
Answer:
53.13 °
Explanation:
In order to do this, we just need to apply the following:
tanα = Dy/Dx
Where:
Vy: speed of the ball in the y axis.
Vx: speed of the ball in the x axis.
At this point we do not need the speed of the first ball after the collision because in that moment is already heading in the direction that we are looking for. Therefore, we just need to use the innitial data to calculate the direction which the first ball will go.
According to this, then:
tanα = (40/30)
tanα = 1.3333
α = tan⁻¹(1.3333)
<h2>
α = 53.13°</h2>
This means that the final direction of the first ball is 53.13° and in the x axis because the starting momentum of this ball in the x axis has not dissapeared.
Hope this helps