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State Newton's second law of motion with suitable examples.

And derive second equation of motion..

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Answer 1

Answer:

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State Newton's second law of motion with suitable examples.

And derive second equation of motion..

⚡Answer✔

Newton's second law of motion states that the acceleration of a system is directly proportional to and in the same direction as the net external force acting on the system, and inversely proportional to its mass. In equation form, Newton's second law of motion is a=Fnetm a = F net m .

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Newton's Second Law of Motion says that acceleration (gaining speed) happens when a force acts on a mass (object). Riding your bicycle is a good example of this law of motion at work. Your bicycle is the mass. Your leg muscles pushing pushing on the pedals of your bicycle is the force.

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⟹Second Equation of Motion : s=ut+\frac{1}{2}at^2. Third Equation of Motion : v^2=u^2+2as.

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Answer 2

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What is Newton’s Second Law of Motion?

Force is equal to the rate of change of momentum. For a constant mass, force equals mass times acceleration.

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• Newton’s second law states that the acceleration of an object depends upon two variables – the net force acting on the object and the mass of the object. The acceleration of the body is directly proportional to the net force acting on the body and inversely proportional to the mass of the body. This means that as the force acting upon an object is increased, the acceleration of the object is increased. Likewise, as the mass of an object is increased, the acceleration of the object is decreased.

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que- If there is a block of mass 2kg, and a force of 5N is acting on it in the positive x-direction, and a force of 3N in the negative x-direction, then what would be its acceleration?

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solution ☟

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Newton's 2nd Law

To calculate its acceleration, we first have to calculate the net force acting on it.

Fnet = 5N – 3N = 2N

Mass = 2kg

∴ Acceleration = 22 = 1 m/s2

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• Second Equation of Motion : s=ut+\frac{1}{2}at^2. Third Equation of Motion : v^2=u^2+2as.