Question

what is newton's 2nd law.​

Answer 1

✨Newton's second law of motion:

>> Statement:  

The rate of change of momentum of an object is proportional to the unbalanced force applied in the direction of the force.

>> Formula:  

$F\alpha\frac{ma}{t}$

Derivation of the formula:

$F\alpha\frac{mv-mu}{t}$

$F\alpha\frac{m(v-u)}{t}$

As we know $\frac{v-u}{t}$

Therefore, $F\alpha\frac{ma}{t}$

>> Definition:  

When there is less force applied on an object, less acceleration is produced whereas, when there is more force applied on an object, acceleration also increases.

Hence, force is proportional to acceleration.

Additionally, when an object is in motion due to a force applied by a body which has less mass, the applied force would be less as well whereas, when an object is in motion due to a force applied by a boy which has comparatively more mass, the applied force would too increase.

Therefore, the second law of motion is proved.

>> Example:  

If you apply the same force to push a bicycle and also push a bike, the bicycle will move more quicker and will have more acceleration compared to that of the bike, as the bicycle has less mass compared to that of the bike.

Answer 2

heya mate

Newton's second law of motion can be formally stated as follows: 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 proportSecond lawNewton's second law states that acceleration of a particle is dependent on the forces acting upon the particle and the particle's mass. For a given particle, if the net force is increased, the acceleration is increased. ... The momentum p of a particle is defined as the product of its mass m and velocity v: 

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