we are sitting in the bus so u can claim that it is inertia that makes us move forward.....but the insect does not have any attachment or link with the moving vehicles's surfaces this is what makes me think.........
126232
When a vehicle accelerates forward, there is inertia that holds us back until we compensate for it.  The air in the bus also moves forward because it is contained and restrained by the walls, roof, floor, and windows.  The air that the bug is flying in is also first compressed in a backward motion and then stabilized.  Its a good thing, else when the bus moved forward if all the air pooled on the back window then the driver and everyone up front couldn't breathe.  Just as that air exerts an outward pressure upon itself and everything else (if there were no pressure, there would be no wind resistance) that keeps it from collapsing at the back of the bus when it moves forward, the bug continues flying by the same aerodynamics that permits it to fly in the first place.
243572
Of course yes. Inertia is described by the first Newton's law of motion, which applies to any mass, be it a rigid body or not. You can imagine this experiment: put on the bus floor a glass sphere (a good approximation of a perfectly rigid body) and imagine what happens when the bus deviates from resting or moving uniformly: the sphere moves w.r.t. the floor. Its motion is not related to its rigidity, but to the fact that the sphere is not connected to the bus structure, therefore it doesn't receive any external force contrasting its inertia.
293080
Niuchemist is mostly right and deserves the vote, but there is one correction I would make-heavier molecules don't necessarily have less "kinetic energy", they move more slowly-it is the speed of movement that is the critical thing, not the kinetic energy, which is a product of speed *and* mass.
286880
Well, the air around it isn't moving, quite like it is outside.  So it is able to move around in this air far more capably.  Also, it does get affected by the enertia, but it's so good at flying that it is able to compensate for the difference.  Now if you were to take out all the glass and replace it with mesh you would definately see a difference with the fly.  It wouldn't be able to fight against the current of air around it, and would be forced to the back of the bus, the same would be true for your face.:P
75471
Air inside the car is travelling at the same speed as the car. So for a fly, the car is not moving.\n\nThe Earths rotates at a speed of 1000 miles/h at the equator. If you jump why don't you fall miles away? The answer is the same, the Earth is the car and you are the fly.
535799
Say your mon asks you to go do your homework. You have initial reluctance...you wanna start getting up to go do it but then you don't quite stand up. Inertia is reluctance of matter to be transformed from one state to another. A little child hits a ball and the ball resists motion. It won't go. However, a bigger boy hits the ball, and at a certaion point uses enough force to get the ball to begin to move. That forces needed to change the ball from static state to dynamic, is your inertia. Or, think of what you need to do to get your ice-cream just begin to melt??  \n\nIt's a probably a good idea you read, study and understand the subject matter, than finding supplied answers for homework. It defeats the purpose of homework. Goodluck
429278
Very simply:\n\nIf he keeps flying at the same speed, he will be moving at his flight speed plus the speed of the bus.\n\nIf he stops flying, he will fall to the floor (or perhaps land a bit more gracefully than that), and be moving only at the speed of the bus (his flight speed has gone to zero).\n\nIf you jump in a bus, you continue to move forward at the same rate as when you were standing, so you land in the same spot on the floor.  Of course, if the bus changes velocity while you are in midair, your motion will be different from its and you will not be in the same spot when you land.\n\nThe same goes for the rotation of the earth... the circumference of the earth is about 24,000 miles at the equator.  Hence, at the equator, it is moving at about 1467 ft/sec.  If you jumped and stayed in midair for 1 second, the earth would travel 1467', but you are travelling at the same rate and you would land in the same spot you jumped from.
1654
These answers "seem" correct. But Im not sure thats really the case. Within our solar system there is still gravity. What do you think is holding all the planets in place? Perhaps between systems that might be more true.\n\nThe problem is getting a large mass moving fast enough to really be productive. You still need loads of energy to get a real spaceship moving. We just dont have that tech yet. \n\nRight now scientists are working on a plasma engine. Check it out.
246214
You and fly are in the moving car, so both of you are at rest relative to each other. So when the fly goes from back seat to front or from front to back, it is faster than you, bacause both of you were at rest within the car.\n\nFor example, we all are in the moving earth, so all our speed is relative to earth, we do not take into consideration the earth's speed. I hope I am able to make it clear.
393777
I think it's kinda funny. Those people sit in their cars with it turned up, and they don't even realize that OUTSIDE of the car all that's heard is the body panels and other various parts rattling - they are virtually vibrating their cars loose!  Whatever - it's just an advertisement for some other fool to steal their "fly system"......turn it up dude!
471917
Well, in the first place you'd be dead...but let's ignore that.\n\nIt would take a good bit of energy to move the boulder, energy that our muscles coundn't produce. Inertia is the tendency for things to either keep moving or stay still.  So, it fits right in there...the boulder would "want" to stay in the same state, it would take energy to change it...we don't have the energy to move it all that well.
95203
this is where relativity comes into play. It depends from what viewpoint. speed is always relative to a "fixed" point (which might not be so "fixed" after all). get my drift?
268501
Have you ever seen trees still, then suddenly start shaking around or "swaying" inexplicably--with no one else around? Have you ever been in or seen a sailboat?  The motion of acceleration that did not come from an engine is to be explained how?  Have you ever driven with your windows open?  Storms do not just stay in one place, rather they proceed across the continent.  All of these things are attributable to....WIND! I win lol!  P.S. Just because you haven't seen something--doesn't mean it doesn't exist: ex= a baby pigeon!  lol
18406
Is this having any relation with cricket?\nLizards are in the process of evolution so may be in next 2000 yrs who knows all lizards can fly .... \nAnd there might be no brids in earth...\nSo please wait to see ....
285000
Part of the problem is that word "suspended."  It sounds like the planets are "suspended" *from* something, which is not true.  That's why I worry about the mobile idea, with planets "hanging" from coat hangers, as it just reinforces that idea.\n\nThe other thing is that the motion of the planets (their orbit around the sun) is an important ingredient.  They are far enough away that we can't see how fast they are moving.  So they seem to be quite still in the sky (like stars) ... again they *appear* "suspended."  Again, a hanging mobile just reinforces the notion that all the planets are perfectly still.  (BTW, this is why I think every parent should teach a child to find a couple of planets in the sky every few evenings, so the child gets the notion of how it changes position relative to the constellations.  Mars is always really easy to spot, and these days, Saturn is really bright!  That alone can get a child hooked on stargazing, and on science in general!)\n\nHowever, all that said, the mobile idea (styrofoam balls hanging from string) is not a bad one for illustrating the concept of the solar system.  I would just recommend getting it rotating even a little bit to illustrate the idea that the planets are *orbiting* the sun ... they are *moving*.  That is the key lesson I would want a 6-year-old to take away from the project (although what's even more important is that he have fun doing it, and that he asks a lot of questions ... the point really, is to make science fun). \n\nThe actual answer to your "how" question (in case your son really wants to know) is: balanced forces.  The planets have *two* forces acting on them:  (1) the gravity of the sun pulling them inward; and (2) the centrifugal force caused by the speed of their orbit, pushing them out.  These two forces are just balanced enough to keep the planets from falling into the sun, or flying into space.  So if your son were a little older (say 10 or 11) I would try to incorporate elements in the project that represent these two forces.  I have some ideas (and I can present them if you like), but this would be more involved than you probably need to get.\n\nGood luck!
111334
Don't hold your breath. Our beloved Axle has gone loopy.\n\n|||||||||||\n(¤¿¤)\n''''O''''
185348
You may be confusing acceleration with velocity. An object in motion will remain in that motion unless a non-zero net force is applied to it. If you are in the void of space, and are traveling along at a particular velocity, you will remain at that velocity. On Earth, drag and other forms of friction will slow you down.\n\nAcceleration is different. For something to continue to accelerate, a constant non-zero net force must be applied to it.\n\nacceleration = force/mass so if I have a mass of 50kg and want to accelerate at 100m/s^2 (100 meters per second per second) then I need a constant force of 5000 newtons applied to me. Keep in mind that that is 5000 newtons relative to ME.\n\nNow, according to our current understanding of light, it would take an infinite amount of energy to reach speed of light because force = mass/acceleration and as you accelerate, your mass increases! Neither you nor I will notice this effect in our daily life but it becomes more noticable as you approach the speed of light. This does not create mass in the sense that new mass is appearing in the universe, it just adds more weight (no pun intended) to the mass that's already there. This is actully called the reletivistic mass. Your mass when you're at rest, is your rest mass.\n\nThough we won't be traveling close to the speed of light any time soon, there have been plans to get humans to high speeds without killing them. One such way is to accelerate in intervals. For example, you feel a strong force when taking off in an airplane but once the airplane reaches a few hundred miles per hour, and you've caught up, you can do it again.