Question

10 State the following
a)Newton's Second law​

Answer 1

Newtons Second Law :-

The rate of change of momentum is directly proportional to the applied force, and takes place in the direction in which the force acts.

➞ Force ∝ Change in momentum/Time taken

➞ F ∝ mv - mu/t

➞ F ∝ m( v - u)/t

• a = v - u/t

➞ F ∝ m × a

➞ F = k × m × a

➞ F = m × a

➞ Force = Mass × Acceleration

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Newtons First law :

A body at rest will remain at rest, and a body in motion will continue in motion in a straight line with uniform speed, unless it is compelled by an external force to change its state of rest or of uniform motion.

Newtons Third law :

To every action there is an equal and opposite reaction.

Answer 2

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• Newton's second law of motion ☛

Definition ✂

In the second law, the force on an object is equal to its mass times its acceleration

Formula ✂

f = ma

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• Newton's first law of motion ☛

Definition ✂

In the first law, an object will not change its motion unless a force acts on it.

Formula ✂

v = u + at

• Newton's third law of motion ☛

Definition ✂

In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

Formula ✂

v² = u² + 2ah

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