Question

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Answer 1

Answer:

Newton's Three laws of motion may be stated as follows:

1. First law of motion: Every object in a state of uniform motion will remain in a state of motion unless an external force acts on it.

2. Second law of motion: Force equals mass times acceleration or force is equal to the product of mass and acceleration.

3. Third law of motion: For every action there is an equal and opposite reaction.

Derivation of Second law of motion:

Consider a body of mass ‘m’ moving with velocity v.

The linear momentum of a body is given by:

p = mv

Now According to Newton’s 2nd Law of Motion:

Force is directly proportional to rate of change of momnetum, that is

F α dp/dt

F = k dp/dt

F = k d(mv)/dt

F = k md(v)/dt

F = k ma

Experimentally k =1

F = k ma

Which is the required equation of force.

Answer 2

Answer:

there are three laws of motion.

.first law of Motion states that all the objects are in motion or are in rest before external force is applied. , second law of motion state that the force acting on a body is directly proportional to the acceleration., third law of motion state that to every action there is an equal and opposite reaction..

acceleration produced in a body directly proportional to 1/mass of body.

after combined force applied on a body is directly proportional to mass of a body is multiply acceleration produced in body...

force is directly proportional to mass multiply acceleration

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