Physics, 02.09.2019 19:00 kimlyn58p0wyn0

Explain how the motion of an object is effected when the forces acts on it

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Assume you are mentioning the net force acting on an object.

Then, according to Newton's Second Law: F = ma, the direction of net force will be the same as the acceleration.

In other words, the object will possess an acceleration immediately, the velocity of the object along this direction will increase with time going by, providing the force constantly applying

Answer from: Quest

It's have to be 12 or idk

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

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