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What may not be considered a good stationary object when applying the two second rule?
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∙ 12y ago
An animal
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∙ 12y ago
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How are the forces on a moving car balanced Surely if thrust and air resistance are equal the car will be stationary.?
No, that's not the way our Universe works. I suggest do some reading on Newton's Second Law - for instance, in the Wikipedia. Briefly, you do NOT need a NET force to keep an object moving. With a net force of zero (i.e., balanced forces): * A stationary object will remain stationary * A moving object will continue moving, at constant velocity.
What forces affect an object's velocity?
By definition, every force acting on the object affects its velocity.Newton's second law states that the acceleration of an object (the rate of change of velocity with time) is equal to the net force on the object divided by the object's mass. Force is a vector, so if you have several forces acting on the object you must take their vector sum. Only if all the forces acting on the object sum up to zero will the object not accelerate. In that case it will remain stationary if it was already stationary, or continue to move in the same speed and in the same direction as before.
What are the conditions for the forces to be balanced?
That simply means that the sum (the vector sum) of forces acting on an object is zero. Note that for an object to remain in balance, there is also a second condition: the sum of all TORQUES on the object must also be zero.
How do you know if an object is stationary?
-- Take two snapshots of it, at two different times. -- If it's in different places in the two photos, it's definitely not stationary. -- If it's in the same place in both photos, then it may or may not be stationary. It could be returning periodically to the same place, and you just happened to catch it on two occasions when it was in the same place. So if the photos are identical, you must ... -- Take two more snapshots, at two different times, spaced by a different length of time from the first pair of photos. -- If the object's position is the same in both of the second set of photos, then it's truly stationary.
When one object causes a second object to resonate and the second object has absorbed from the first?
energy
What may be considered a good stationary object when applying the two second rule?
An animal
What may not be considered a good stationary object when applying the two second rule parked car or an animal or bridge or tree?
Animal
How are the forces on a moving car balanced Surely if thrust and air resistance are equal the car will be stationary.?
No, that's not the way our Universe works. I suggest do some reading on Newton's Second Law - for instance, in the Wikipedia. Briefly, you do NOT need a NET force to keep an object moving. With a net force of zero (i.e., balanced forces): * A stationary object will remain stationary * A moving object will continue moving, at constant velocity.
What are the differences in newtons laws?
The first one sets the system of coordinates (inertial). The second one gives connection between the net force and the acceleration. The third one postulates than if a first object applies some force F to a second object. The second object is applying the same force F to the first object.
What forces affect an object's velocity?
By definition, every force acting on the object affects its velocity.Newton's second law states that the acceleration of an object (the rate of change of velocity with time) is equal to the net force on the object divided by the object's mass. Force is a vector, so if you have several forces acting on the object you must take their vector sum. Only if all the forces acting on the object sum up to zero will the object not accelerate. In that case it will remain stationary if it was already stationary, or continue to move in the same speed and in the same direction as before.
What are the conditions for the forces to be balanced?
That simply means that the sum (the vector sum) of forces acting on an object is zero. Note that for an object to remain in balance, there is also a second condition: the sum of all TORQUES on the object must also be zero.
When is pitch actually changed?
When the vibrating object actually vibrates faster (more times per second) or slower (less times per second). For example, when you tune a guitar string, by applying more or less tension.
How do you know if an object is stationary?
-- Take two snapshots of it, at two different times. -- If it's in different places in the two photos, it's definitely not stationary. -- If it's in the same place in both photos, then it may or may not be stationary. It could be returning periodically to the same place, and you just happened to catch it on two occasions when it was in the same place. So if the photos are identical, you must ... -- Take two more snapshots, at two different times, spaced by a different length of time from the first pair of photos. -- If the object's position is the same in both of the second set of photos, then it's truly stationary.
How force is measured from Newton's second law of motion?
F=m*a Force is equal to mass times acceleration, so when you apply acceleration to an object with mass you are really applying force
How close should you follow a car?
Use the 3 second rule. Watch the telephone poles or another stationary object . When the car ahead of you passes the object start counting, One thousand one , One thousand two , One thousand three. If you pass the object before one thousand three you are too close .
When one object causes a second object to resonate and the second object has absorbed from the first?
energy
If motionless is time infinitely fast?
no, the speed of time in a "stationary" frame is one second per second. but as there are no truly stationary frames only relatively stationary frames, most observers will measure other observers speed of time as slower than their own, which is always one second per second.one of the core ideas of relativity theory is that there is no such thing as motionless.
