Answer:
compound
Explanation:
a substance made from two or more different elements that have been chemically joined. Examples of compounds include water (H2O), which is made from the elements hydrogen and oxygen, and table salt (NaCl), which is made from the elements sodium and chloride.
Answer:
D. You will feel the same weight as you do on Earth
Explanation:
In free space, she is suppose to be weightless.
Free fall can be described as body in motion where the body is under the effect of acceleration due to gravity only and no other acceleration..
Since I am accelerating away from her at an acceleration of 1g
Then,
F=ma, where a=g
Then F=mg
Since my weight on earth is W=mg
This is equals to my weight in the spaceship, then I will feel the same weights as I do on earth.
Answer: catching the ball is a better choice.
Explanation:
The collision of 2 objects involves involves large impact force since the force is inversely proportional to the time in which the momentum of the object changes.
Mathematically

If we catch the ball we increase the time in which the momentum of the ball is decreased thus the impact force that acts on us is lower as larger time is allowed for the ball to decrease it's momentum.
If we allow the ball to hit us the momentum of the ball changes in a short period of time thus applying a large impact force on our body thus increasing the chances of toppling.
Drag;
Drag is the aerodynamic force that opposes an aircraft's motion through the air. Drag is generated by every part of the airplane (even the engines!). How is drag generated? Drag is a mechanical force. It is generated by the interaction and contact of a solid body with a fluid (liquid or gas).
The drag on an object depends on several variables. The most important of them, to understand the experiments you carried out is the area of the object.
The area of the object is the most important factor to understand the experiments.
Learn more about Drag on:
https://brainly.in/question/13010660
#SPJ4
Time is independent, while # of birds is dependent.