Question

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state Newton's 2nd law​

Answer 1

Theoritical:-

☆According to Newton's 2nd law of motion,'The rate of change of momentum is directly proportional to the force applied and it takes place in the direction of force'.

Mathematical formula:-

The mathematical formula of Newton's 2nd law of motion,can be in 2 ways:-

•F=m(v-u)/t

•F=ma (since, a=v-u/t)

(where F is force,m is mass of the body,a is acceleration)

Some practical applications:-

Example 1:A cricket player lowers his hand while catching a ball.

Reason: By doing so the player increases t,the time interval for change in momentum.Because of this force experienced by his hands is less.

Example 2:Vehicles are fitted with shockers.

Reason: The shockers increase the time of transmission of force from the road to the seats of the vehicle.Because of this less force is experienced by the passengers and the ride becomes comfortable.

Example 3:A karate player can break a pile of bricks with a single blow.

Reason:The karate player does this activity quite fast,thereby reducing t.Because of this a large force F acts on the bricks which is enough to break the pile of bricks.

Answer 2

$hello \: \: \: \: \: mate \:$

According to Newton s Second Law of Motion, also known as the Law of Force and Acceleration, a force upon an object causes it to accelerate according to the formula net force = mass x acceleration. So the acceleration of the object is directly proportional to the force and inversely proportional to the mass.