The statement that when the distance between the balls decreases, the size of arrow increases because it shows the gravitational pull between the two balls which increases is true.

According to Newton's law of universal gravitation:

"The gravitational force of attraction between two bodies is directly proportional to the product of their masses and inversely proportional to the square of their separation".

Mathematically, the law is written as:

F = $\frac{G m_{1} m_{2} }{r^{2} }$

F is the gravitational force

G is the universal gravitational constant

m is the mass of the body

r is the distances between them.

We see that the less the distance between the two bodies the more the gravitational force they have.

learn more:

Gravitational force brainly.com/question/1724648

#learnwithBrainly

8 0

3 years ago

Read 2 more answers

What organ systems are involved when running?

djyliett [7]

Answer:

There are many different organ systems that are involved in when we exercise. The three main ones are the respiratory system which is involved in breathing, the circulatory system which circulates blood flow throughout the body and lastly the muscular system, as you use muscles when you are moving.

Explanation:

<em>I would appreciate brainliest, if not that's ok!</em>

7 0

2 years ago

Read 2 more answers