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Is it possible for an object to be stationary while under acceleration?
Wiki User
∙ 14y ago
Answer: yes
explanation: In Calculus, we have a primary equation (f(x)) which represents position 3 primary derivatives: velocity(f'(x) called f prime), acceleration(f''(x) called f double prime) and jerk(f'''(x)called f triple prime, which is irrelevant to this question). f(x) is the position of an object, f'(x) is the change in position and f''(x) is change in velocity. If we take f(x)=2x2+4x-3, we will get f'(x)=4x-4 and f''(x)=4. This means we are accelerating at any time (x). now, if we find the value f'(x)=0 (which would be a velocity of 0, or stationary), we get 0=4x-4, in which x=1. therefore f'(1)=0, but f''(1)=4. So, our acceleration after 1 second is 4 (we are accelerating), but the velocity is 0 (we are stationary for an instant).
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∙ 14y ago
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When will you say a body is in uniform acceleration and non-acceleration?
"Uniform acceleration" means that acceleration doesn't change over time - usually for a fairly short time that you are considering. This is the case, for example, when an object drops under Earth's gravity - and air resistance is insignificant. "Non-uniform acceleration", of course, means that acceleration does change over time.
When an object is traveling in a circular path around another object?
Yes an object can be accelerate if its moving along a curve path because when the object moves along a curve path it has constant speed and there is still change in velocity and change in velocity has acceleration
What percent of earth's gravity does mars have?
The acceleration of an object under the force of gravity alone is*: a = GM/R^2 a = acceleration G = gravitational constant (G = 6.674E-13 Nm^2/kg^2) M = mass of the object/planet R = distance from the center of the object/planet At the equator, an object dropped near the surface of Earth falls with an acceleration of 9.78 meters per square second. At the equator on Mars, and object dropped at the surface will fall with an acceleration of 3.71 meters per square second. Therefore Mars has about 38% of the Earth's gravity. *This equation is only true for spherically-distributed masses
If a moving body has no acceleration does it mean that no force is acting on it?
It means there is no net force acting on it. A plane in the air has no acceleration, but it does have forces acting on it. Lift pushes it up Gravity pushes it down Air resistance opposes its movement Thrust provides movement When all these forces are equal the plane will move at a constant velocity. If one of these forces becomes greater the NET force on the plane will no longer be 0 and there will be an acceleration or deceleration. Hope that helps. Another example would be space as there are no opposing forces, if in space once a speed was that speed would be constant until you 1.) decelerated with a force in the opposite direction 2.) accelerated the speed past your current velocity in your current direction 3.) Get caught by some planets gravity and crash to you death (but then this question is the least of your problems)
Which forces are unbalanced?
coz if they werent, whatever they were acting on, would either stay sill, or move at a constant speed
It it possible for an object to be sationary while under acceleration?
"Stationary" means zero speed. The object's speed is not changing, and the direction of the speed is obviously also not changing.By definition then, acceleration is zero.
What does the area under an acceleration time graph show?
The area under an acceleration-time graph is equal to the object's velocity (not change in velocity).
The free fall acceleration of an object under earth's gravity is directed where?
The center of the Earth.
Is it possible for an object in freefall to have no acceleration?
No, but it is possible to not have an increase in speed. Because velocity is a directional quantity, not a scalar one, an object in freefall (by definition within a gravity field) is always under acceleration, just not necessarily one that alters its speed or even its position. Objects in orbit around a planet are in freefall (hence weightlessness) where the tangential component of their forward motion opposes the pull of gravity.
What is the distance an object travels each second for objects falling under constant acceleration?
2.
Does pressure on an object affect its acceleration?
A submarine deep in the ocean is under great pressure, and a space capsule outside the atmosphere is under zero pressure. Both of them are capable of high acceleration, zero acceleration, and anything in between. The pressure is irrelevant.
How does acceleration change when object is thrown veritcally upward under ideal conditions?
From the time the object leaves your hand, its acceleration doesn't change at all ... it remains constant at 9.8 meters (32.2 feet) per second2 downward. Well, we have to admit that the acceleration does change to zero once the object hits the ground.
Is it possible that an object is accelerated but moves in constant speed?
Absolutely. It happens all the time, and in many more places than you might think. First we need to look at how we think about acceleration. If we consider that a change in vector is also a change in speed, or velocity, then any object that is constantly changing it's vector in angular momentum is under acceleration but does not change its actual speed, just direction. So then every star, and every planet, in motion is under constant acceleration and at the same time maintains the same velocity, or speed. Another thing to consider is Einstein's Theory of General Relativity which says that an object under the influence of gravity, but stationary, like us standing on the surface of the Earth, is very much the same as the same object that is being accelerated by the same force of gravity, or G-force. So that means as you are standing on the ground, you are actually being 'accelerated' towards the center of the Earth, even though you are maintaining a constant velocity, or speed.
Is it possible for an object's weight to be different than its mass?
More then possible! It is so by definition. Mass is the "amount" of material in an object; weight is the force the object exerts under the influence of gravity.
Under what circumstances can an object moving with an constant speed (uniform magnitude oits velocity) have an acceleration?
When the direction changes. A simple case is an object moving in a circle, at constant speed.
What is The acceleration of a falling object under the influence of earths gravitational force?
If no other forces (such as friction) act on an object, or if friction is insignificant (such as, when a heavy object just begins to fall), the acceleration is 9.8 meters per second square. This means that every second, the speed will increase by 9.8 meters per second.
When will you say a body is in uniform acceleration and non-acceleration?
"Uniform acceleration" means that acceleration doesn't change over time - usually for a fairly short time that you are considering. This is the case, for example, when an object drops under Earth's gravity - and air resistance is insignificant. "Non-uniform acceleration", of course, means that acceleration does change over time.
