Who said that a force is not needed to keep an object moving?
Newton
What is natural state of an object?
Objects do not change motion without unbalanced force. Objects in motion do not always require a force to keep them moving. Objects have two “natural” states of motion, at rest (static equilibrium) and moving at a constant speed and direction (dynamic equilibrium).
Is a state of object that is at rest?
An object at rest has zero velocity – and (in the absence of an unbalanced force) will remain with a zero velocity. Such an object will not change its state of motion (i.e., velocity) unless acted upon by an unbalanced force. Objects resist changes in their velocity.
WHO concluded that the natural state of a moving object is uniform motion?
English scientist Sir Isaac Newton examined the motion of physical objects and systems under various conditions. In 1687, he published his three laws of motion in Philosophiae Naturalis Principla Mathematica.
Can you be in a state of rest at least for a second?
Answer: The key point here is that if there is no net force acting on an object (if all the external forces cancel each other out) then the object will maintain a constant velocity. If that velocity is zero, then the object remains at rest.
When we can say an object is at rest?
an object is said to be in rest if it doesn’t move with respect to a stationary viewer. if the object is moving with respect to a stationary viewer then it is said to be in motion.
Can a body in motion be at rest?
Rest and motion are always relative. A body cannot exist at a state of absolute rest or absolute motion. For example, two persons sitting in a moving bus are at rest w.r.t each other but are in motion w.r.t. a person standing on the roadside. Thus, there is no object which can be condisered to be at absolute rest.
How can we say that an object is in motion?
An object is in motion when its distance from another object is changing. Whether an object is moving or not depends on your point of view. For example, a woman riding on a bus is not moving in relation to the seat she is sitting on, but she is moving in relation to the buildings the bus passes.
Can a body be in rest as well as in motion?
Yes, an object can be at rest with respct to one object andcan bein motion with respect to one object and can be in motion with respect to another object. Thus rest and motion are relative terms. Answer. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.
Is it possible that displacement is zero but?
Answer. Yes it is possible that the displacement is 0 but not the distance as consider that you have a straight road from home to school, you go to school from home and return to home. Let the distance from your home be x. Then the total distance covered is 2x but displacement is 0.
Can displacement be zero even if distance is zero?
Displacement can be zero even when distance is not zero. Displacement = Minimum distance between final(B) and initial position(B) = 0.
Is it possible that distance not zero but displacement is zero?
Yes, displacement can be zero even if the distance is not zero. For example, when a body is thrown vertically upwards from a point A on the ground, after sometime it comes back to the same point A.
Why is distance not negative?
Distance cannot be negative, and never decreases. Distance is a scalar quantity, or a magnitude, whereas displacement is a vector quantity with both magnitude and direction. Directed distance does not measure movement; it measures the separation of two points, and can be a positive, zero, or negative vector.
Is displacement can be negative?
Displacement can be positive, negative, and even zero.
What is an example of negative displacement?
Displacement can be negative because it defines a change in position of an object while carefully monitoring its direction. Then you walk back towards your original location in the −h opposite direction. But Surien calls you to her office which is 15m further past your office.