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slega [8]
3 years ago
5

2. How can people know that they've learned?

Physics
1 answer:
photoshop1234 [79]3 years ago
4 0
Answer: People know that they jap e learned by their mistakes or by someone ya being them something
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Which statement explains whether or not a person should use an experiment of a ball rolling down a hill as evidence that the for
Ksenya-84 [330]

The ball raised up the hill is given gravitational potential energy, which

causes it to roll spontaneously down the hill.

The statement that explains whether the ball rolling down the hill

experiment should be used is; <u>The experiment shows the ball falls toward </u>

<u>the bottom of the hill, so it provides direct evidence that gravity pulls an </u>

<u>object downward. They should use it.</u>

Reason:

The equation for the velocity of a ball falling down a hill is v = \sqrt{\dfrac{10}{7} \cdot g \cdot h}

Therefore, by increasing the height from which the ball rolls down the hill,

the velocity of the ball increases, which indicates that the ball is

accelerating, and therefore, being acted on by a force, the force of gravity.

Therefore;

Given that the ball falls or moves with increasing speed towards

the bottom of the hill, which shows that the motion is due to Earth's pull

known as the gravitational force, the experiment should be used.

Learn more here:

brainly.com/question/3175380

8 0
2 years ago
_____ is a closed loop of conductors through which charges flow.
Verdich [7]
The answer is c. Hope that helped
8 0
3 years ago
Read 2 more answers
What is equivalent to 21/12
Harrizon [31]
21/12 is equal to 1 3/4 hope this helps!

7 0
3 years ago
Read 2 more answers
A boy slides a book across the floor, using a force of 5 N over a distance of 2 m. What is the kinetic energy of the book after
nikklg [1K]

As we know from work energy theorem that work done by external force is change in kinetic energy

So from all above we can say

W = k_f - K_i

in order to find work done we can say

W = F.d

here we have

F = 5 N

d = 2 m

so we will have

W = (5)(2) J

W = 10 J

so from above equation we can say that final kinetic energy will be same as work done

so we will have kinetic energy as

K = 10 J

6 0
3 years ago
What is the best term used to describe a vehicle hitting another object?
Ira Lisetskai [31]
I would assume it’s collision
3 0
2 years ago
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