Answer:
Yes. Inertia keeps the speed maintained though my feet leave the ground.
Explanation:
Inertia is the resistance to the change in position of any object this means this resistance will keep me traveling at 30 km/s relative to the sun. If the person wants to change the position we apply force to do that because inertia is opposing us to not do that. We are always traveling with 30km/s relative to sun due to inertia.
Hello! You can call me Emac or Eric.
I understand your problem, that question is pretty hard. But I found some information that I think you should read. This can get your problem done quickly.
Please hit that thank you button if that helped, I don’t want thank you’s I just want to know that this helped.
Please reply if this doesn’t help, I will try my best to gather more information or a answer.
Here is some good information that could help you out a lot!
Let’s begin by exploring some techniques astronomers use to study how galaxies are born and change over cosmic time. Suppose you wanted to understand how adult humans got to be the way they are. If you were very dedicated and patient, you could actually observe a sample of babies from birth, following them through childhood, adolescence, and into adulthood, and making basic measurements such as their heights, weights, and the proportional sizes of different parts of their bodies to understand how they change over time.
Unfortunately, we have no such possibility for understanding how galaxies grow and change over time: in a human lifetime—or even over the entire history of human civilization—individual galaxies change hardly at all. We need other tools than just patiently observing single galaxies in order to study and understand those long, slow changes.
We do, however, have one remarkable asset in studying galactic evolution. As we have seen, the universe itself is a kind of time machine that permits us to observe remote galaxies as they were long ago. For the closest galaxies, like the Andromeda galaxy, the time the light takes to reach us is on the order of a few hundred thousand to a few million years. Typically not much changes over times that short—individual stars in the galaxy may be born or die, but the overall structure and appearance of the galaxy will remain the same. But we have observed galaxies so far away that we are seeing them as they were when the light left them more than 10 billion years ago.
That is some information, I do have more if you need some! Thanks!
Have a great rest of your day/night! :)
Emacathy,
Brainly Team.
Answer:
it's C
Explanation:
have a nice day............
You can only determine the speed since the only info we know is how much you ran in how long of a time.
Answer:
(a) W = +397.1 J
(b) W = -204.6 J
(c) W = 0
(d) W= + 192.5 J
Explanation:
Work (W) is defined as the product of force (F) by the distance (d)the body travels due to this force. :
W= F*d Formula ( 1)
The forces that perform work on an object must be parallel to its displacement.
The forces perpendicular to the displacement of an object do not perform work on it.
The work is positive (W+) if the force has the same direction of movement of the object.
The work is negative (W-) if the force has the opposite direction of the movement of the object.
Problem development
(a) Work performed by the worker's applied force on the box .
W= 209 N * 1.9 m = +397.1 J
(b) Work performed by the gravitational force on the crate
We calculate the weight component parallel to the displacement of the box:
We define the x-axis in the direction of the inclined plane ,25.0° to the horizontal.
We define the y-axis and in the direction of the plane perpendicular to the inclined plane.
W= m*g=26*9.8= 254.8N : total box weight
Wx= W*sen25.0°= 254.8*sen25.0°= 107.68 N
W = -Wx *d =107.68 N *1.9 m= -204.6 J
(c) Work performed by normal force (N) exerted by the incline on the crate
The force N is perpendicular to the displacement, then:
W=0
(d) Total work done on the crate
W = 397.1 J -204.6 J
W = 192.5 J
