Question

Question #f23b2

Answer 1

Put simply, a force is something which changes the momentum of an object. The magnitude of a force is the rate of change of momentum caused.

This is shown by manipulation of the famous equation `F=ma`

`F=ma=m(v_(f)-v_i)/t=(p_(f)-p_i)/t`

Where `F` is the force
`m` is the mass of the object
`a` is acceleration, which is the rate of change of velocity
`v_i` is the initial velocity of the object which the force acts upon
`v_f` is the object's final velocity
`t` is time
`p` is momentum, which is equal to `mxxv`

Extra info:
Of course, because force is the rate of change of momentum, it can be linked to an object whose mass changes while velocity remains constant.

`F=(p_(f)-p_i)/t=v(m_(f)-m_i)/t`

Where `m_f` is final mass and `m_i` is initial mass.

Force can also be related to an object whose mass and velocity change simultaneously, but those equations involve calculus, so I won't include those here.

Answer 2

In physics, a force is any interaction which tends to change the motion of an object. In other words, a force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate. Force can also be described by intuitive concepts such as a push or a pull.