Why is document body null?
body object, it is most likely because the body has not been defined yet. If document. body is null, you most likely need to execute your code in the window. onload function.
Does a body at rest possess any kinetic energy?
When a body is at rest, it cannot have kinetic energy and momentum because kinetic energy is associated with the motion and momentum is defined as the product of the mass of the body and velocity.
Can kinetic energy of a body be zero?
Kinetic energy can only be zero or positive; it cannot be negative. An object’s kinetic energy is the energy released as a result of its motion; an object with any form of motion has a positive amount of kinetic energy.
What object contains kinetic energy?
1. An airplane has a large amount of kinetic energy in flight due to its large mass and fast velocity. 2. A baseball thrown by a pitcher, although having a small mass, can have a large amount of kinetic energy due to its fast velocity.
Can documents null?
It’s common to pass document as the context node. null is common for HTML documents or when no namespace prefixes are used.
What does a body possess when a body is at rest?
♠Yes, An object at Rest possesses Energy . ♠It possess Potential energy i,e energy due to its state of motion . ♠For example, a ball at rest possesses potential energy within .
Which of the following does not possess kinetic energy?
The correct answer is option 3, i.e., A raised hammer. A raised hammer does NOT possess kinetic energy.
Can a body have zero momentum?
So, if the Kinetic energy is zero, momentum will be zero. Hence, a body cannot have momentum without having energy.
What is the kinetic energy if velocity is zero?
When the body falls off the ground, and it stops moving then its velocity is zero, and therefore the kinetic energy is also zero in this case.
What is kinetic energy of a body?
Answer: In physics, the kinetic energy (KE) of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
What do you mean by kinetic energy of the body?
motion
Kinetic energy is a form of energy that an object or a particle has by reason of its motion. Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass.
What is the body of a document?
The body of a document contains the document’s content. The content may be presented by a user agent in a variety of ways. For example, for visual browsers, you can think of the body as a canvas where the content appears: text, images, colors, graphics, etc.
