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Explain why free-fall acceleration can be regarded as a constant for objects falling within a faw hundred meters of earth's surface?
Wiki User
∙ 14y ago
Since the radius of Earth is far greater(rough: 6400km) than a few 100m, you can neglect that distance and still have g=9.80 (g=GM/(R^2), with R being the radius of earth, the extra few hundred metres has a neglible effect on the result of the calculation
Wiki User
∙ 14y ago
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What is the value of acceleration when a body moves uniformly?
When a body moves with uniform, its acceleration is is constant if v(m/s) t(s) a(m/s2) 4 1 0 8 2 4 12 3 4 16 4 4 (8-4/1)=4 12-8/1=4 hence acceleration is constant.
Can your body sense constant acceleration and explain?
your body can sense constant acceleration. For example, you can sense a car speeding up or slowing down or a plane taking off, because the organs inside your body have inertia and they tend to stay in their present state of motion when other parts of your body are changing their state of motion. This difference can be sensed by nerves throughout your body.
Are you accelerating if you are traveling in a constant direction with constant speed and explain?
If you are traveling at a constant speed with changing direction there is a change in velocity, so you are accelerating.
When is velocity parallel to acceleration?
Explain circumstances, in which the velocity acceleration of a body is parallel?
Explain the circumstances in which the velocity and acceleration of the body is parallel?
the acceleration of the car is increasind.Then the v and a are parallel to each other.
What is the formula for distance traveled as a function of time when an object is subject to constant acceleration?
d(t)=Vi(t)+((1/2)(a*t^2)) I just can't find anywhere to explain where that 1/2 constant comes from.
What is the value of acceleration when a body moves uniformly?
When a body moves with uniform, its acceleration is is constant if v(m/s) t(s) a(m/s2) 4 1 0 8 2 4 12 3 4 16 4 4 (8-4/1)=4 12-8/1=4 hence acceleration is constant.
How does Newtons Third Law of Motion explain why the shuttles acceleration increases as the fuel is burned?
You don't need to go that far. Newton's 2nd Law does the job nicely.F = M x A" The force on the body is equal to the product of (mass) times (acceleration) " The thrust (force) of the rocket motors is constant, so the product of the spacecraft's(mass) times its (acceleration) is constant.As it burns fuel from its tanks, its total mass shrinks. In order for the product of(mass) x (acceleration) to remain constant, the acceleration increases.
Is it possible for a body to have an acceleration when moving with constant speed explain?
Yes, it's acceleration will be zero because the velocity isn't changing, but it has an acceleration. Think of it in terms of integration and derivation. Acceleration is the derivative of velocity, so if velocity is a constant number the acceleration must be zero.Generally if value of acceleration is "zero", we consider it to mean that there is NO acceleration. The question that was actually answered above was "Can acceleration be DEFINED fora body moving at constant speed?"It is possible for an object to be moving at a constant angular speed and yet have an effective acceleration in a tangential direction.===========================================Both of you guys are missing the most important point here, with the resultthat you have to twist your own arm almost to the point of dislocation in orderto state an answer.The essential underlying consideration is that, contrary to popular misconception,"acceleration" does not mean 'speeding up', or even 'changing speed'. It means"change in velocity", and "velocity" means "speed anddirection". If either speedor direction change, then that means there is 'acceleration'.The answer to the question is simple, and almost entirely non-technical. It is:"Yes, because 'acceleration' means change of either speed or direction. So, ifthe direction of the body's motion is changing, then the body has acceleration,even if its speed is constant."
Can an object have a constant speed and the varying velocity at the same time explain?
Velocity is a vector. A vector has a magnitude and a direction. The scalar or magnitude portion of velocity is speed. Velocity is a constant only when both the speed and direction are not varying. Hence, when the speed is changing, the velocity cannot be a constant.
Can your body sense constant acceleration and explain?
your body can sense constant acceleration. For example, you can sense a car speeding up or slowing down or a plane taking off, because the organs inside your body have inertia and they tend to stay in their present state of motion when other parts of your body are changing their state of motion. This difference can be sensed by nerves throughout your body.
Are you accelerating if you are traveling in a constant direction with constant speed and explain?
If you are traveling at a constant speed with changing direction there is a change in velocity, so you are accelerating.
When is velocity parallel to acceleration?
Explain circumstances, in which the velocity acceleration of a body is parallel?
Explain the difference between the constant of a hyperbola and the constant of an ellipse?
In contrast, for an ellipse it is the ''sum'' of these distances that is a constant
Explain the circumstances in which the velocity and acceleration of the body is parallel?
the acceleration of the car is increasind.Then the v and a are parallel to each other.
What is the acceleration from 9 seconds to 12 seconds explain?
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Explain the circumstances when the acceleration and the velocity of car are parallel?
when velocity of a car is increasing then velocity and acceleration are parallel to each other.
