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Can the x component of momentum be constant even if the y component is changing?
Wiki User
∙ 12y ago
Yes.
Wiki User
∙ 12y ago
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If a ferris wheel is rotating at constant speed is it moving at a constant velocity?
No. Velocity combines speed and the direction of motion.Constant velocity is constant speed in a straight line.In circular motion, the velocity is always changing even if the speed is constant,because the direction is always changing.
Acceleration is an increase of speed during a given interval of time?
No. It is the change in velocity (not speed) during a given interval of time. It can be an increase or a decrease although a decrease is also called a deceleration.The distinction between velocity and speed can best be illustrated by an object going round in a circle at a constant speed. It is changing direction all the time so that its velocity is constantly changing. It is constantly accelerating even though it is travelling at constant speed.
Can you find the examples when the rate of change of momentum reduces?
Ok, we know that momentum is mass*velocity. To create a change we need to either change velocity or mass. This is where elastic and inelastic collision come into place. Rate of momentum changes in both collision cases. To reduce the rate of change of momentum, even though this is a little vague, you'll need to reduce the changes in either mass or velocity. Such that the momentum at point A, for instance, reduces momentum at point B and then C and so forth (by constantly reducing velocity). A live example is gas molecules, they have numerous collisions and the momentum constantly changes by variation in velocities. But remember the momentum of a system is conserved, that's a thing you'd probably need to know too to understand. Hope that helps.
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 the car accelerate if the speedometer of a car indicates a constant speed?
no. see the definition of acceleration. it can remain a constant speed while the velocity changes. *Edit* Actually, the answer is yes. The algebraic formula for acceleration is displacement over time but you are only thinking in terms of linear motion, or in the case of this scenario, a straight road. But when the car follows the road as it snakes or rounds a bend its acceleration is changing even if its speed is not. A more specific definition of acceleration is the change in velocity over the change in time. Velocity is a measurement of speed but with a direction and when an object goes into a circular motion path (or any motion path that isn't linear) its velocity is continually changing and a change in velocity means a change in acceleration. Plainly put, if the car turns a corner with a constant speed, the magnitude is constant but the acceleration vector is not.
Can an object with constant speed be accelerating?
Yes. 'Acceleration' means either speed or direction is changing. If direction is changing,then there is acceleration, even if speed is constant.
Are temperature coefficients alwaws constant?
A: As an engineer it surely like to drink to that. No the coefficient varies from component to component and even with the environment to boot.
If you are traveling around a curve at a constant speed of 30 km is the veiocity change?
Yes, the velocity is changing. Velocity is a quantity composed of the speed and the direction of motion. Constant velocity means: Constant speed, in a straight line. If the direction is changing, then the velocity is changing, even if the speed is constant.
If a ferris wheel is rotating at constant speed is it moving at a constant velocity?
No. Velocity combines speed and the direction of motion.Constant velocity is constant speed in a straight line.In circular motion, the velocity is always changing even if the speed is constant,because the direction is always changing.
Why achanging velocity cannot maintaining constant speed?
A changing velocity can maintain constant speed if the motion is circular. The constant change in direction is a change in velocity, even if the speed is constant.
Can an object be accelerated if it has a constant speed?
Yes. Acceleration means either speed or direction is changing. If direction is changing,then that's acceleration, even if speed is constant.
What is an example of constant speed with changing velocity?
Velocity is a vector, thus it has a direction. Therefore, you can change the velocity by changing direction. A great example of this is a ball on a string spinning at a constant speed, but it is continually changing direction, therefore, even though the speed is constant the velocity changes at every instant.
What happens to the momentum if the mass of the object increases?
The momentum will increase in this case.The momentum will increase in this case.The momentum will increase in this case.The momentum will increase in this case.
The car rounds the turn at a constant velocity of 90 mph?
If the car rounds the turn, then its velocity is not constant.Velocity is a thing that has magnitude and direction. The magnitude is what we call "speed".If the direction is changing, then the velocity is changing, even if the speed is constant.
Why acceleration produces at constant speed?
Acceleration by definition is a change in speed, direction, or both. If the speed is constant, the direction could still be changing. You can feel a change in direction, therefore you can feel acceleration even if the speed is constant.
Does an object have to be heavy in order to have momentum?
No. Even a single electron has momentum.
If a force is increased on an object what happens to tha velocity and the momentum?
You don't even have to increase the force.If there's a force acting on an object, then both its velocity and its acceleration are changing.
