Question

newton second law of motion​

Answer 1

Answer:

the second law of motion by newtorn is on the acceleration of an object is directly related to the net force and inversely related to its mass. Acceleration of an object depends on two things, force and mass.

Answer 2

REQUIRED ANSWER :-

Momentum :- Product of mass and velocity is termed as momentum . S.I unit of momentum is kg-m/s.

p = mv

• p → momentum
• m → mass
• v → velocity

Let us consider , a body of mass m is moving with initail velocity u . Let the momentum be P₁ . Force changes the velocity of the body. Let the time taken be t. Let the final velocity of the body be v . Let the momentum be P₂

• P₁ = mu
• P₂ = mv

Change in momentum(∆P) = P₂ - P₁

Rate of change of momentum

ㅤㅤ ㅤ ㅤ(∆P/t)ㅤ= (P₂ - P₁)/t

ㅤㅤㅤㅤㅤㅤㅤㅤ= (mv - mu)/t

Rate of change of momentum is directly proportional to Force.

→ F = km(v-u) / t

• Here , k is constant . k = 1.

v-u / t = a

Hence , F = ma

Above equation is known as Force equation. This equation gives relation between mass and velocity.

S.I unit of force is kg-m/s².

Example :-

• Bullet fired from a gun.
• Missile launched from missile launcher.
• Bomb thrown from helicopter.