define Newton's second law of newton
Answers
Answer:
Newton's second law states that 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.
Explanation:
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Answer:
Force is equal to the rate of change of momentum. For a constant mass, force equals mass times acceleration.
Newton’s second law of motion pertains to the behaviour of objects for which all existing forces are not balanced. The second law informs us that the acceleration of an object depends on two variables – the net force acting on the body and the mass of the body. The acceleration of the body is directly proportional to force and inversely proportional to the mass. As a result, when the force acting on a body is increased, the acceleration increases. Likewise, when the mass of the body is increased, the acceleration decreases.
Newton’s second law can be formally stated as,
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
This statement is expressed in equation form as,
a = Fnet/m
The above equation is often rearranged to a more familiar form as shown below. The net force is equated to the product of the mass times the acceleration.
Component Form of Newton’s Second Law
According to Newton’s second law, the net force of an object is an influence of the environment, acceleration is the object’s response, and the strength of an object is inversely proportional to the mass of the object. So it can be said that larger the mass, smaller is the acceleration.
The vector equation of Newton’s second law of motion can be written as three component equations as follows:
Fx→=ma⃗ x
Fy→=ma⃗ y
Fz→=ma⃗ z
The second law is a description of how a body responds mechanically to its environment. The influence of the environment is the net force, the body’s response is the acceleration, and the strength of the response is inversely proportional to the mass m. The larger the mass of an object, the smaller its response (its acceleration) to the influence of the environment (a given net force). Therefore, a body’s mass is a measure of its inertia.
The application of the second law of motion can be seen in identifying the amount of force needed to make an object move or to make it stop. Following are a few examples that we have listed to help you understand this point:
Kicking a ball
When we kick a ball we exert force in a specific direction, which is the direction in which it will travel. In addition, the stronger the ball is kicked, the stronger the force we put on it and the further away it will travel.