can u explain tha question?
2006-10-10 15:27:09 · 10 answers · asked by Kshitil 1 in Science & Mathematics ➔ Physics
The question is asking "if something is accelerating, does it have a force on it (a net force -- one not being neutralized by some other force)". The answer is yes, that what F=ma means; if a isn't 0 then F isn't 0.
9.8m/s/s happens to be the acceleration due to gravity, so likely this object is near the surface of the earth (and getting closer quickly).
2006-10-10 15:32:15 · answer #1 · answered by sirpimmon 2 · 0⤊ 0⤋
Well it depends on the situation. All freefalling objects on Earth fall with an acceleration of 9.8 m/s2. The net force is given by Fnet = (sigma)F or the sum of the forces acting on the object. and since
Fnet =mass * acceleration, the acceleration does not change when near the surface of the Earth. Keep in mind which forces are being accounted for. Often times in earlier physics courses they omit wind resistance in the case of freefall and so the only force acting on it is gravity which yields Fnet = mass * gravity. If any forces are acting on it then you need to make a free body diagram and sum up the vectors correctly.
Hope this helps!
2006-10-10 15:39:08 · answer #2 · answered by Brandon M 1 · 0⤊ 0⤋
The earth's gravity pulls approximately with a force of 9.81 m/s^2, though it varies by location (since the earth is not a perfect sphere). Therefore there is a force being applied- the force of gravity. It is typically labeled "mg" (mass times acceleration, or in this case, gravitational acceleration).
It is important to remeber that there is always a force being applied when an object accelerates (that is, speeds up or slows down), but not always when it is moving. For example, an object moving constantly at 2 m/s without resistance would NOT have a force being applied at it (though there would it there was friction).
2006-10-10 15:33:37 · answer #3 · answered by John H 4 · 0⤊ 0⤋
Acceleration potential that there is not a internet rigidity. Thats what it extremely is accelerating, its in basic terms a definition of it. Acceleration happens whilst a extra physically powerful amounter of rigidity is utilized to a minimum of one part then the rigidity of the different.
2016-10-16 01:34:02 · answer #4 · answered by merkel 4 · 0⤊ 0⤋
I'm not shure what you are asking, but 9.8m/s2 is the rate of acceleration for an object falling towards earth. not including the wind drag factor
2006-10-10 15:34:34 · answer #5 · answered by 1-4-all 3 · 0⤊ 0⤋
Yes. Whenever you have acceleration, you have a net force.
2006-10-10 15:33:58 · answer #6 · answered by nondescript 7 · 0⤊ 0⤋
Didn't you already learn that force is equal to mass times acceleration?
2006-10-10 15:28:58 · answer #7 · answered by arbiter007 6 · 0⤊ 0⤋
yes, its moving, so there must be a force causing it to move. In this case the net force is gravity minus a little aerodynamic friction.
2006-10-10 15:31:50 · answer #8 · answered by T 3 · 0⤊ 1⤋
E=Mc2
2006-10-10 15:38:33 · answer #9 · answered by Anonymous · 0⤊ 0⤋
yes, the f of gravity
2006-10-10 15:28:52 · answer #10 · answered by kentclark_007 1 · 0⤊ 0⤋