Key words:
Laws of motion, Inertia, Mass,
Linear momentum, Conservation of
momentum, Impulse, Impulsive force. please answer this keywords
Answers
Answer:
These are some of the terms in Physics of the chapter Laws of motion...
Explanation:
Here are the definitions:
LAWS OF MOTION– Newton's laws of motion are three physical laws that, together, laid the foundation for classical mechanics. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces.
There are three laws of motion:
• Every object will remain at rest or in motion unless compelled to change its state by the action of an external force.
• The acceleration of an object is directly related to the net force and inversely related to its mass. Acceleration of an object depends on two things, force and mass.
• For every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A.
INERTIA– Inertia is a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
MASS– Mass is the amount of matter or substance that makes up an object.
LINEAR MOMENTUM– Linear momentum is the product of the mass and velocity of an object. It is a vector quantity, possessing a magnitude and a direction.
CONSERVATION OF MOMENTUM– For two or more bodies in an isolated system acting upon each other, their total momentum remains constant unless an external force is applied. Therefore, momentum can neither be created nor destroyed. This is the law of conservation of momentum.
IMPULSE– Impulse is a certain amount of force you apply for a certain amount of time to cause a change in momentum.
For example, when you hit a ball with a cricket bat, you apply a force for a time (a very short period in this case) to cause a change (or transfer) of momentum in the ball.
***The product of the impulsive force and the time it acts is called the impulse. The impulse is equal to the change of momentum caused by the impulsive force.
IMPULSIVE FORCE– Change in momentum is force times acting time. Forces that act for a very short time are called impulsive forces.
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