G. Short answer questions.
1. What do you mean by multiple motion? Give an example.
2. What do you mean by average speed?
3. What do you mean by a vector? Give two examples.
4. What is uniform velocity?
5. What is weight?
6. What is the principle on which a spring balance works?
Answers
Answer:
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Explanation:
1) When a body possesses more than one simple motion, it is called a multiple motion. Example: You are travelling by a train. ... Thus they have 2 kinds of motion, i. e. multiple motion. So also the blades of the fan in the train have multiple motion (a linear motion of the train and the rotation).
2) Average speed is calculated by dividing the total distance that something has traveled by the total amount of time it took it to travel that distance. Speed is how fast something is going at a particular moment. Average speed measures the average rate of speed over the extent of a trip.
3)A vector is a quantity or phenomenon that has two independent properties: magnitude and direction. The term also denotes the mathematical or geometrical representation of such a quantity. Examples of vectors in nature are velocity, momentum, force, electromagnetic fields, and weight.
4)The condition in which a body covers equal distance in an equal interval of the time is known to be uniform velocity. if both its magnitude and direction do not change with time then it can be said that the body is at uniform velocity. ...
5)In science and engineering, the weight of an object is the force acting on the object due to gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quantity, the magnitude of the gravitational force.
6)It works by Hooke's Law, which states that the force needed to extend a spring is proportional to the distance that spring is extended from its rest position. Therefore, the scale markings on the spring balance are equally spaced. A spring scale cannot measure mass, only weight.
Answer:
1. When a body possesses more than one simple motion, it is called a multiple motion. Example: You are travelling by a train. ... Thus they have 2 kinds of motion, i. e. multiple motion. So also the blades of the fan in the train have multiple motion (a linear motion of the train and the rotation).
2. Average speed is calculated by dividing the total distance that something has traveled by the total amount of time it took it to travel that distance. Speed is how fast something is going at a particular moment. Average speed measures the average rate of speed over the extent of a trip.
3.A vector is a quantity or phenomenon that has two independent properties: magnitude and direction. The term also denotes the mathematical or geometrical representation of such a quantity. Examples of vectors in nature are velocity, momentum, force, electromagnetic fields, and weight.
4.The condition in which a body covers equal distance in an equal interval of the time is known to be uniform velocity. In equation( d=v t ) v is the average velocity of a body during time t. if both its magnitude and direction do not change with time then it can be said that the body is at uniform velocity.
5.In science and engineering, the weight of an object is the force acting on the object due to gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quantity, the magnitude of the gravitational force.
6.It works by Hooke's Law, which states that the force needed to extend a spring is proportional to the distance that spring is extended from its rest position. Therefore, the scale markings on the spring balance are equally spaced. A spring scale cannot measure mass, only weight.
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