Question

how do we find initial velocity of the body to rewrite the formula of force=m(v-u)/t?
note: If any unnecessary answer comes, I will report it. ​

Answer 1

Answer:

Hope this helps you ,.... mark me as brainliest

Explanation:

Force is basically an interaction between the objects because of which they make changes in their motion. The force is measured in Newtons (N). Newton is the scientific unit and we use it for measuring weight. 1 Newton is equal to around 0.22 pounds. So, a girl that weighs only 100 lbs. would be equal to about 445 newtons, or her force due to the gravity (Fg).

Newton’s First Law

The First Law of Motion by Newton says that every object persists to be in uniform motion in a straight line or in the state of rest unless an external force acts on it.

Newton’s Second Law

The second law of motion by Newton says that the force is equal to the change in momentum per change in the time. For a constant mass, force equals the mass times acceleration, i.e. F = m x a.

A vector equation is the modern statement of newton’s second law:

F⃗  = dp→dt

Where:

p⃗  = momentum and vecp = mv

If the time interval for the applied force increases, as a result, the value of the force applied decreases.

From newton’s second law of motion:

F⃗  ∝ dp→dt

F⃗  = K × dp→dt = kma→

For simplicity, the constant of proportionality (k) is decided to be 1, therefore:

F⃗ =ma→

Newton’s Third Law

Every time a body exerts a force on another body, the latter simultaneously exerts an equal and opposite force on the first one. In vector form, if F1,2 is the force of the body 1 on the body 2 and F_{2,1} F2,1 that of that of body 2 on body 1, then:

F1,2=−F2,1

In a system composed of object 1 and object 2, the net force on the system due to their mutual interactions is 0:

F1,2 + F2,1 = 0